CVE-2012-4559

Severity Score

6.8

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.

Múltiples vulnerabilidades de doble liberación en las funciones (1) agent_sign_data en agent.c, (2) channel_request en channels.c, (3) ssh_userauth_pubkey en auth.c, (4) sftp_parse_attr_3 en sftp.c, y (5) try_publickey_from_file en keyfiles.c en libssh antes de v0.5.3 permiten a atacantes remotos provocar una denegación de servicio (caída de la aplicación) y posiblemente ejecutar código de su elección a través de vectores no especificados.

*Credits: N/A

CVSS Scores

NISTv2 6.8

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2012-08-21 CVE Reserved
2012-11-27 CVE Published
2024-06-30 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-399: Resource Management Errors

CAPEC

References (13)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2012/11/20/3	Mailing List
http://www.securityfocus.com/bid/56604	Vdb Entry
https://bugzilla.redhat.com/show_bug.cgi?id=871612	X_refsource_misc
https://exchange.xforce.ibmcloud.com/vulnerabilities/80218	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html	2017-08-29
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html	2017-08-29
http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html	2017-08-29
http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html	2017-08-29
http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html	2017-08-29
http://www.debian.org/security/2012/dsa-2577	2017-08-29
http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release	2017-08-29
http://www.mandriva.com/security/advisories?name=MDVSA-2012:175	2017-08-29
http://www.ubuntu.com/usn/USN-1640-1	2017-08-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libssh Search vendor "Libssh"		Libssh Search vendor "Libssh" for product "Libssh"				<= 0.5.2 Search vendor "Libssh" for product "Libssh" and version " <= 0.5.2"		-		Affected
Libssh Search vendor "Libssh"		Libssh Search vendor "Libssh" for product "Libssh"				0.4.7 Search vendor "Libssh" for product "Libssh" and version "0.4.7"		-		Affected
Libssh Search vendor "Libssh"		Libssh Search vendor "Libssh" for product "Libssh"				0.4.8 Search vendor "Libssh" for product "Libssh" and version "0.4.8"		-		Affected
Libssh Search vendor "Libssh"		Libssh Search vendor "Libssh" for product "Libssh"				0.5.0 Search vendor "Libssh" for product "Libssh" and version "0.5.0"		-		Affected
Libssh Search vendor "Libssh"		Libssh Search vendor "Libssh" for product "Libssh"				0.5.0 Search vendor "Libssh" for product "Libssh" and version "0.5.0"		rc1		Affected
Libssh Search vendor "Libssh"		Libssh Search vendor "Libssh" for product "Libssh"				0.5.1 Search vendor "Libssh" for product "Libssh" and version "0.5.1"		-		Affected