CVE-2012-4561
Libssh Free Pointer Dereference Vulnerability
Description
The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free "an invalid pointer on an error path," which might allow remote attackers to cause a denial of service (crash) via unspecified vectors.
INFO
Published Date :
Nov. 30, 2012, 10:55 p.m.
Last Modified :
Nov. 21, 2024, 1:43 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.9
Exploitability Score :
10.0
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2012-4561.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2012-4561 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2012-4561 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html Added Reference http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html Added Reference http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html Added Reference http://www.debian.org/security/2012/dsa-2577 Added Reference http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/ Added Reference http://www.mandriva.com/security/advisories?name=MDVSA-2012:175 Added Reference http://www.openwall.com/lists/oss-security/2012/11/20/3 Added Reference http://www.securityfocus.com/bid/56604 Added Reference http://www.ubuntu.com/usn/USN-1640-1 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=871617 Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/80220 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Aug. 29, 2017
Action Type Old Value New Value Removed Reference http://xforce.iss.net/xforce/xfdb/80220 [No Types Assigned] Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/80220 [No Types Assigned] -
CVE Translated by [email protected]
May. 18, 2016
Action Type Old Value New Value Removed Translation Las funciones (1) publickey_make_dss, (2) publickey_make_rsa , (3) signature_from_string, (4) ssh_do_sign y (5) ssh_sign_session_id en keys.c en libssh antes de v0.5.3 liberan un "puntero no válido en una ruta de error", lo que podría permitir a atacantes remotos provocar una denegación de servicio (caída de la aplicación) a través de vectores no especificados. Added Translation Las funciones (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign y (5) ssh_sign_session_id en keys.c en libssh en versiones anteriores a la 0.5.3 liberan "un puntero no válido en una ruta errónea", lo que podría permitir a atacantes remotos provocar una denegación de servicio (caída) a través de vectores no especificados. -
CVE Modified by [email protected]
May. 17, 2016
Action Type Old Value New Value Changed Description The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free "an invalid pointer on an error path," which might allow remote attackers cause a denial of service (crash) via unspecified vectors. The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free "an invalid pointer on an error path," which might allow remote attackers to cause a denial of service (crash) via unspecified vectors. -
Initial Analysis by [email protected]
Dec. 03, 2012
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2012-4561 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2012-4561
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
10.62 }} 0.19%
score
0.95031
percentile