CVE-2015-6291

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Cisco AsyncOS before 8.5.7-043, 9.x before 9.1.1-023, and 9.5.x and 9.6.x before 9.6.0-046 on Email Security Appliance (ESA) devices mishandles malformed fields during body-contains, attachment-contains, every-attachment-contains, attachment-binary-contains, dictionary-match, and attachment-dictionary-match filtering, which allows remote attackers to cause a denial of service (memory consumption) via a crafted attachment in an e-mail message, aka Bug ID CSCuv47151.

Cisco AsyncOS en versiones anteriores a 8.5.7-043, 9.x en versiones anteriores a 9.1.1-023 y 9.5.x y 9.6.x en versiones anteriores a 9.6.0-046 en dispositivos Email Security Appliance (ESA) no maneja correctamente los campos mal formados durante el filtrado body-contains, attachment-contains, every-attachment-contains, attachment-binary-contains, dictionary-match y attachment-dictionary-match, lo que permite a atacantes remotos causar una denegación de servicio (consumo de memoria) a través de un archivo adjunto manipulado en un mensaje de correo electrónico, también conocido como Bug ID CSCuv47151.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-08-17 CVE Reserved
2015-11-06 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (2)

URL	Tag	Source
http://www.securitytracker.com/id/1034064	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151104-esa2	2016-12-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				7.7.0-000 Search vendor "Cisco" for product "Email Security Appliance" and version "7.7.0-000"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				7.7.1-000 Search vendor "Cisco" for product "Email Security Appliance" and version "7.7.1-000"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				8.0_base Search vendor "Cisco" for product "Email Security Appliance" and version "8.0_base"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				8.5.6-052 Search vendor "Cisco" for product "Email Security Appliance" and version "8.5.6-052"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				8.5.6-073 Search vendor "Cisco" for product "Email Security Appliance" and version "8.5.6-073"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				8.5.6-074 Search vendor "Cisco" for product "Email Security Appliance" and version "8.5.6-074"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				8.5.6-106 Search vendor "Cisco" for product "Email Security Appliance" and version "8.5.6-106"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				8.5.6-113 Search vendor "Cisco" for product "Email Security Appliance" and version "8.5.6-113"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				8.5.7-042 Search vendor "Cisco" for product "Email Security Appliance" and version "8.5.7-042"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				8.5_base Search vendor "Cisco" for product "Email Security Appliance" and version "8.5_base"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				9.0.0 Search vendor "Cisco" for product "Email Security Appliance" and version "9.0.0"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				9.0.0-212 Search vendor "Cisco" for product "Email Security Appliance" and version "9.0.0-212"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				9.0.0-461 Search vendor "Cisco" for product "Email Security Appliance" and version "9.0.0-461"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				9.0.5-000 Search vendor "Cisco" for product "Email Security Appliance" and version "9.0.5-000"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				9.1.0-032 Search vendor "Cisco" for product "Email Security Appliance" and version "9.1.0-032"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance"				9.6.0-042 Search vendor "Cisco" for product "Email Security Appliance" and version "9.6.0-042"		-		Affected