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 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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.8 UNKNOWN
NETWORK
MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
redhatCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 89%
VendorProductVersion
libsshlibssh
𝑥
≤ 0.5.2
libsshlibssh
0.4.7
libsshlibssh
0.4.8
libsshlibssh
0.5.0
libsshlibssh
0.5.0:rc1
libsshlibssh
0.5.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libssh
bullseye (security)
0.9.8-0+deb11u1
fixed
bullseye
0.9.8-0+deb11u1
fixed
bookworm
0.10.6-0+deb12u1
fixed
bookworm (security)
0.10.6-0+deb12u1
fixed
sid
0.11.1-1
fixed
trixie
0.11.1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libssh
quantal
Fixed 0.5.2-1ubuntu0.12.10.1
released
precise
Fixed 0.5.2-1ubuntu0.12.04.1
released
oneiric
Fixed 0.5.2-1ubuntu0.11.10.1
released
lucid
Fixed 0.4.2-1ubuntu1.1
released
hardy
ignored
Common Weakness Enumeration
References
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html
http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html
http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html
http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html
http://www.debian.org/security/2012/dsa-2577
http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/
http://www.mandriva.com/security/advisories?name=MDVSA-2012:175
http://www.openwall.com/lists/oss-security/2012/11/20/3
http://www.securityfocus.com/bid/56604
http://www.ubuntu.com/usn/USN-1640-1
https://bugzilla.redhat.com/show_bug.cgi?id=871612
https://exchange.xforce.ibmcloud.com/vulnerabilities/80218
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html
http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html
http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html
http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html
http://www.debian.org/security/2012/dsa-2577
http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/
http://www.mandriva.com/security/advisories?name=MDVSA-2012:175
http://www.openwall.com/lists/oss-security/2012/11/20/3
http://www.securityfocus.com/bid/56604
http://www.ubuntu.com/usn/USN-1640-1
https://bugzilla.redhat.com/show_bug.cgi?id=871612
https://exchange.xforce.ibmcloud.com/vulnerabilities/80218