// For flags

CVE-2011-1720

(smtpd): Crash due to improper management of SASL handlers for SMTP sessions

Severity Score

10.0
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The SMTP server in Postfix before 2.5.13, 2.6.x before 2.6.10, 2.7.x before 2.7.4, and 2.8.x before 2.8.3, when certain Cyrus SASL authentication methods are enabled, does not create a new server handle after client authentication fails, which allows remote attackers to cause a denial of service (heap memory corruption and daemon crash) or possibly execute arbitrary code via an invalid AUTH command with one method followed by an AUTH command with a different method.

El servidor SMTP en Postfix anterior a v2.5.13, v2.6.x anterior a v2.6.10, v2.7.x anterior a v2.7.4, y v2.8.x anterior a v2.8.3, cuando ciertos métodos Cyrus SASL de autenticación son activados, no crea un nuevo manejador de servidor después de que la autentificación falle, lo que permite a atacantes remotos provocar una denegación de servicio (corrupción de memoria libre y caída de demonio) o posiblemente ejecutar código de su elección a tra´ves de un comando AUTH no válido con un método seguido por un comando AUTH con un método diferente.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2011-04-18 CVE Reserved
  • 2011-05-13 CVE Published
  • 2016-11-09 First Exploit
  • 2024-08-06 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.0
Search vendor "Postfix" for product "Postfix" and version "2.0.0"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.1
Search vendor "Postfix" for product "Postfix" and version "2.0.1"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.2
Search vendor "Postfix" for product "Postfix" and version "2.0.2"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.3
Search vendor "Postfix" for product "Postfix" and version "2.0.3"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.4
Search vendor "Postfix" for product "Postfix" and version "2.0.4"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.5
Search vendor "Postfix" for product "Postfix" and version "2.0.5"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.6
Search vendor "Postfix" for product "Postfix" and version "2.0.6"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.7
Search vendor "Postfix" for product "Postfix" and version "2.0.7"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.8
Search vendor "Postfix" for product "Postfix" and version "2.0.8"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.9
Search vendor "Postfix" for product "Postfix" and version "2.0.9"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.10
Search vendor "Postfix" for product "Postfix" and version "2.0.10"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.11
Search vendor "Postfix" for product "Postfix" and version "2.0.11"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.12
Search vendor "Postfix" for product "Postfix" and version "2.0.12"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.13
Search vendor "Postfix" for product "Postfix" and version "2.0.13"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.14
Search vendor "Postfix" for product "Postfix" and version "2.0.14"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.15
Search vendor "Postfix" for product "Postfix" and version "2.0.15"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.16
Search vendor "Postfix" for product "Postfix" and version "2.0.16"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.17
Search vendor "Postfix" for product "Postfix" and version "2.0.17"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.18
Search vendor "Postfix" for product "Postfix" and version "2.0.18"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.0.19
Search vendor "Postfix" for product "Postfix" and version "2.0.19"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.1.0
Search vendor "Postfix" for product "Postfix" and version "2.1.0"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.1.1
Search vendor "Postfix" for product "Postfix" and version "2.1.1"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.1.2
Search vendor "Postfix" for product "Postfix" and version "2.1.2"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.1.3
Search vendor "Postfix" for product "Postfix" and version "2.1.3"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.1.4
Search vendor "Postfix" for product "Postfix" and version "2.1.4"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.1.5
Search vendor "Postfix" for product "Postfix" and version "2.1.5"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.1.6
Search vendor "Postfix" for product "Postfix" and version "2.1.6"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.0
Search vendor "Postfix" for product "Postfix" and version "2.2.0"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.1
Search vendor "Postfix" for product "Postfix" and version "2.2.1"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.2
Search vendor "Postfix" for product "Postfix" and version "2.2.2"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.3
Search vendor "Postfix" for product "Postfix" and version "2.2.3"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.4
Search vendor "Postfix" for product "Postfix" and version "2.2.4"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.5
Search vendor "Postfix" for product "Postfix" and version "2.2.5"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.6
Search vendor "Postfix" for product "Postfix" and version "2.2.6"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.7
Search vendor "Postfix" for product "Postfix" and version "2.2.7"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.8
Search vendor "Postfix" for product "Postfix" and version "2.2.8"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.9
Search vendor "Postfix" for product "Postfix" and version "2.2.9"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.10
Search vendor "Postfix" for product "Postfix" and version "2.2.10"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.11
Search vendor "Postfix" for product "Postfix" and version "2.2.11"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.2.12
Search vendor "Postfix" for product "Postfix" and version "2.2.12"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3
Search vendor "Postfix" for product "Postfix" and version "2.3"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.0
Search vendor "Postfix" for product "Postfix" and version "2.3.0"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.1
Search vendor "Postfix" for product "Postfix" and version "2.3.1"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.2
Search vendor "Postfix" for product "Postfix" and version "2.3.2"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.3
Search vendor "Postfix" for product "Postfix" and version "2.3.3"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.4
Search vendor "Postfix" for product "Postfix" and version "2.3.4"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.5
Search vendor "Postfix" for product "Postfix" and version "2.3.5"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.6
Search vendor "Postfix" for product "Postfix" and version "2.3.6"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.7
Search vendor "Postfix" for product "Postfix" and version "2.3.7"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.8
Search vendor "Postfix" for product "Postfix" and version "2.3.8"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.9
Search vendor "Postfix" for product "Postfix" and version "2.3.9"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.10
Search vendor "Postfix" for product "Postfix" and version "2.3.10"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.11
Search vendor "Postfix" for product "Postfix" and version "2.3.11"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.12
Search vendor "Postfix" for product "Postfix" and version "2.3.12"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.13
Search vendor "Postfix" for product "Postfix" and version "2.3.13"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.14
Search vendor "Postfix" for product "Postfix" and version "2.3.14"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.15
Search vendor "Postfix" for product "Postfix" and version "2.3.15"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.16
Search vendor "Postfix" for product "Postfix" and version "2.3.16"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.17
Search vendor "Postfix" for product "Postfix" and version "2.3.17"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.18
Search vendor "Postfix" for product "Postfix" and version "2.3.18"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.3.19
Search vendor "Postfix" for product "Postfix" and version "2.3.19"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4
Search vendor "Postfix" for product "Postfix" and version "2.4"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.0
Search vendor "Postfix" for product "Postfix" and version "2.4.0"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.1
Search vendor "Postfix" for product "Postfix" and version "2.4.1"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.2
Search vendor "Postfix" for product "Postfix" and version "2.4.2"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.3
Search vendor "Postfix" for product "Postfix" and version "2.4.3"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.4
Search vendor "Postfix" for product "Postfix" and version "2.4.4"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.5
Search vendor "Postfix" for product "Postfix" and version "2.4.5"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.6
Search vendor "Postfix" for product "Postfix" and version "2.4.6"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.7
Search vendor "Postfix" for product "Postfix" and version "2.4.7"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.8
Search vendor "Postfix" for product "Postfix" and version "2.4.8"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.9
Search vendor "Postfix" for product "Postfix" and version "2.4.9"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.10
Search vendor "Postfix" for product "Postfix" and version "2.4.10"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.11
Search vendor "Postfix" for product "Postfix" and version "2.4.11"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.12
Search vendor "Postfix" for product "Postfix" and version "2.4.12"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.13
Search vendor "Postfix" for product "Postfix" and version "2.4.13"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.14
Search vendor "Postfix" for product "Postfix" and version "2.4.14"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.4.15
Search vendor "Postfix" for product "Postfix" and version "2.4.15"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.0
Search vendor "Postfix" for product "Postfix" and version "2.5.0"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.1
Search vendor "Postfix" for product "Postfix" and version "2.5.1"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.2
Search vendor "Postfix" for product "Postfix" and version "2.5.2"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.3
Search vendor "Postfix" for product "Postfix" and version "2.5.3"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.4
Search vendor "Postfix" for product "Postfix" and version "2.5.4"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.5
Search vendor "Postfix" for product "Postfix" and version "2.5.5"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.6
Search vendor "Postfix" for product "Postfix" and version "2.5.6"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.7
Search vendor "Postfix" for product "Postfix" and version "2.5.7"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.8
Search vendor "Postfix" for product "Postfix" and version "2.5.8"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.9
Search vendor "Postfix" for product "Postfix" and version "2.5.9"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.10
Search vendor "Postfix" for product "Postfix" and version "2.5.10"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.11
Search vendor "Postfix" for product "Postfix" and version "2.5.11"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.5.12
Search vendor "Postfix" for product "Postfix" and version "2.5.12"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6
Search vendor "Postfix" for product "Postfix" and version "2.6"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.0
Search vendor "Postfix" for product "Postfix" and version "2.6.0"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.1
Search vendor "Postfix" for product "Postfix" and version "2.6.1"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.2
Search vendor "Postfix" for product "Postfix" and version "2.6.2"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.3
Search vendor "Postfix" for product "Postfix" and version "2.6.3"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.4
Search vendor "Postfix" for product "Postfix" and version "2.6.4"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.5
Search vendor "Postfix" for product "Postfix" and version "2.6.5"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.6
Search vendor "Postfix" for product "Postfix" and version "2.6.6"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.7
Search vendor "Postfix" for product "Postfix" and version "2.6.7"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.8
Search vendor "Postfix" for product "Postfix" and version "2.6.8"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.6.9
Search vendor "Postfix" for product "Postfix" and version "2.6.9"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.7.0
Search vendor "Postfix" for product "Postfix" and version "2.7.0"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.7.1
Search vendor "Postfix" for product "Postfix" and version "2.7.1"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.7.2
Search vendor "Postfix" for product "Postfix" and version "2.7.2"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.7.3
Search vendor "Postfix" for product "Postfix" and version "2.7.3"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.8.0
Search vendor "Postfix" for product "Postfix" and version "2.8.0"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.8.1
Search vendor "Postfix" for product "Postfix" and version "2.8.1"
-
Affected
Postfix
Search vendor "Postfix"
Postfix
Search vendor "Postfix" for product "Postfix"
2.8.2
Search vendor "Postfix" for product "Postfix" and version "2.8.2"
-
Affected