CVE-2013-6171

Ubuntu Security Notice USN-3556-2

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

checkpassword-reply in Dovecot before 2.2.7 performs setuid operations to a user who is authenticating, which allows local users to bypass authentication and access virtual email accounts by attaching to the process and using a restricted file descriptor to modify account information in the response to the dovecot-auth server.

checkpassword-reply en Dovecot anteriores a 2.2.7 ejecuta operaciones setuid a usuarios que se están autenticando, lo cual permite a usuarios locales sortear la autenticación y acceder a cuentas de email virtuales adjuntandose al proceso y utilizando un descriptor de fichero restringido para modificar información de la cuenta en la respuesta al servidor dovecot-auth.

USN-3556-1 fixed vulnerabilities in Dovecot. This update provides the corresponding update for Ubuntu 12.04 ESM. It was discovered that Dovecot incorrectly handled certain authentications. An attacker could possibly use this to bypass authentication and access sensitive information. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2013-10-18 CVE Reserved
2013-12-09 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-287: Improper Authentication

CAPEC

References (5)

URL	Tag	Source
http://cpanel.net/tsr-2013-0010-full-disclosure	X_refsource_misc
http://wiki2.dovecot.org/AuthDatabase/CheckPassword#Security	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
http://www.dovecot.org/list/dovecot-news/2013-November/000264.html	2018-03-16

URL	Date	SRC
http://secunia.com/advisories/54808	2018-03-16
https://usn.ubuntu.com/3556-2	2018-03-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				<= 2.2.6 Search vendor "Dovecot" for product "Dovecot" and version " <= 2.2.6"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0 Search vendor "Dovecot" for product "Dovecot" and version "2.0"		beta1		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.0 Search vendor "Dovecot" for product "Dovecot" and version "2.0.0"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.1 Search vendor "Dovecot" for product "Dovecot" and version "2.0.1"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.2 Search vendor "Dovecot" for product "Dovecot" and version "2.0.2"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.3 Search vendor "Dovecot" for product "Dovecot" and version "2.0.3"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.4 Search vendor "Dovecot" for product "Dovecot" and version "2.0.4"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.5 Search vendor "Dovecot" for product "Dovecot" and version "2.0.5"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.6 Search vendor "Dovecot" for product "Dovecot" and version "2.0.6"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.7 Search vendor "Dovecot" for product "Dovecot" and version "2.0.7"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.8 Search vendor "Dovecot" for product "Dovecot" and version "2.0.8"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.9 Search vendor "Dovecot" for product "Dovecot" and version "2.0.9"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.10 Search vendor "Dovecot" for product "Dovecot" and version "2.0.10"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.11 Search vendor "Dovecot" for product "Dovecot" and version "2.0.11"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.12 Search vendor "Dovecot" for product "Dovecot" and version "2.0.12"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.13 Search vendor "Dovecot" for product "Dovecot" and version "2.0.13"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.14 Search vendor "Dovecot" for product "Dovecot" and version "2.0.14"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.0.15 Search vendor "Dovecot" for product "Dovecot" and version "2.0.15"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1 Search vendor "Dovecot" for product "Dovecot" and version "2.1"		rc1		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1 Search vendor "Dovecot" for product "Dovecot" and version "2.1"		rc2		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1 Search vendor "Dovecot" for product "Dovecot" and version "2.1"		rc3		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1 Search vendor "Dovecot" for product "Dovecot" and version "2.1"		rc5		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1 Search vendor "Dovecot" for product "Dovecot" and version "2.1"		rc6		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1 Search vendor "Dovecot" for product "Dovecot" and version "2.1"		rc7		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.0 Search vendor "Dovecot" for product "Dovecot" and version "2.1.0"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.1 Search vendor "Dovecot" for product "Dovecot" and version "2.1.1"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.2 Search vendor "Dovecot" for product "Dovecot" and version "2.1.2"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.3 Search vendor "Dovecot" for product "Dovecot" and version "2.1.3"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.4 Search vendor "Dovecot" for product "Dovecot" and version "2.1.4"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.5 Search vendor "Dovecot" for product "Dovecot" and version "2.1.5"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.6 Search vendor "Dovecot" for product "Dovecot" and version "2.1.6"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.7 Search vendor "Dovecot" for product "Dovecot" and version "2.1.7"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.10 Search vendor "Dovecot" for product "Dovecot" and version "2.1.10"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.11 Search vendor "Dovecot" for product "Dovecot" and version "2.1.11"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.12 Search vendor "Dovecot" for product "Dovecot" and version "2.1.12"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.13 Search vendor "Dovecot" for product "Dovecot" and version "2.1.13"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.14 Search vendor "Dovecot" for product "Dovecot" and version "2.1.14"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.1.15 Search vendor "Dovecot" for product "Dovecot" and version "2.1.15"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2 Search vendor "Dovecot" for product "Dovecot" and version "2.2"		rc1		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2 Search vendor "Dovecot" for product "Dovecot" and version "2.2"		rc2		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2 Search vendor "Dovecot" for product "Dovecot" and version "2.2"		rc3		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2 Search vendor "Dovecot" for product "Dovecot" and version "2.2"		rc4		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2 Search vendor "Dovecot" for product "Dovecot" and version "2.2"		rc5		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2 Search vendor "Dovecot" for product "Dovecot" and version "2.2"		rc6		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2 Search vendor "Dovecot" for product "Dovecot" and version "2.2"		rc7		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2.0 Search vendor "Dovecot" for product "Dovecot" and version "2.2.0"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2.1 Search vendor "Dovecot" for product "Dovecot" and version "2.2.1"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2.2 Search vendor "Dovecot" for product "Dovecot" and version "2.2.2"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2.3 Search vendor "Dovecot" for product "Dovecot" and version "2.2.3"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2.4 Search vendor "Dovecot" for product "Dovecot" and version "2.2.4"		-		Affected
Dovecot Search vendor "Dovecot"		Dovecot Search vendor "Dovecot" for product "Dovecot"				2.2.5 Search vendor "Dovecot" for product "Dovecot" and version "2.2.5"		-		Affected