CVE-2012-4559
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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 5.17% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 92.2% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2012-11-30 22:00Z13 YR AGO
- Last updated
- 2024-08-06 20:42Z2 YR AGO
- Reserved
- 2012-08-21
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- aa25fd1314bc14da3fd4706297adc5772f8aaa3ea090c733670f087c01ba5902
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=871612
- www.debian.orgDSA-2577http://www.debian.org/security/2012/dsa-2577
- www.mandriva.comMDVSA-2012:175http://www.mandriva.com/security/advisories?name=MDVSA-2012:175
- www.ubuntu.comUSN-1640-1http://www.ubuntu.com/usn/USN-1640-1
- lists.opensuse.orgopenSUSE-SU-2013:0130http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html
- lists.opensuse.orgopenSUSE-SU-2012:1622http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html
- exchange.xforce.ibmcloud.comlibssh-code-execution(80218)https://exchange.xforce.ibmcloud.com/vulnerabilities/80218
- lists.fedoraproject.orgFEDORA-2012-18610http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html
- lists.opensuse.orgopenSUSE-SU-2012:1620http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html
- www.openwall.com[oss-security] 20121120 libssh 0.5.3 release fixes multiple security issueshttp://www.openwall.com/lists/oss-security/2012/11/20/3
- lists.fedoraproject.orgFEDORA-2012-18677http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html
- www.securityfocus.com56604http://www.securityfocus.com/bid/56604
- www.libssh.orghttp://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/
07 Fixed in
Debian 12
- libssh Fixed in 0.5.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libssh Fixed in 0.5.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libssh Fixed in 0.5.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.