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 funct...
MediumCVSS 6.8
EPSS 5.2%
- Published
- Updated
- Exploit status
- No public exploit known
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 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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/libssh(Debian:12) | < 0.5.3-1 | 0.5.3-1 |
| debian/libssh(Debian:13) | < 0.5.3-1 | 0.5.3-1 |
| debian/libssh(Debian:14) | < 0.5.3-1 | 0.5.3-1 |
| libssh | <= 0.5.2 | No fix listed |
| libssh | = 0.4.7 | No fix listed |
| libssh | = 0.4.8 | No fix listed |
| libssh | = 0.5.0 | No fix listed |
| libssh | = 0.5.0-rc1 | No fix listed |
| libssh | = 0.5.1 | No fix listed |
References
- Debian Security Tracker CVE-2012-4559 vendor-advisory
- FEDORA-2012-18610 vendor-advisory
- FEDORA-2012-18677 vendor-advisory
- openSUSE-SU-2012:1620 vendor-advisory
- openSUSE-SU-2012:1622 vendor-advisory
- openSUSE-SU-2013:0130 vendor-advisory
- DSA-2577 vendor-advisory
- www.libssh.org vendor-advisory
- MDVSA-2012:175 vendor-advisory
- [oss-security] 20121120 libssh 0.5.3 release fixes multiple security issues mailing-list
- 56604 vdb-entry
- USN-1640-1 vendor-advisory
- bugzilla.redhat.com
- libssh-code-execution(80218) vdb-entry