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
Published Nov 30, 2012
6.8
MEDIUMCVSS 2.0
EPSS 5.18%
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
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.18% (0.05176) | 92.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.18% (0.05176) | 91.35th | v5 (v2026.06.15) |
| Nov 16, 2025 | 5.04% (0.05036) | 89.25th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.82% (0.03818) | 87.04th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.22% (0.05216) | 82.86th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.82% (0.03818) | 87.34th | v4 (v2025.03.14) |
| Dec 19, 2024 | 13.13% (0.13135) | 95.52th | v3 (v2023.03.01) |
| Dec 12, 2024 | 11.91% (0.11908) | 95.57th | v3 (v2023.03.01) |
| Jun 30, 2024 | 11.12% (0.11118) | 95.21th | v3 (v2023.03.01) |
| Mar 7, 2023 | 9.79% (0.09791) | 93.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.54% (0.07544) | 92.83th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.54% (0.07544) | 92.13th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.54% (0.07544) | 81.06th | v2 (v2022.01.01) |
References (13)
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2012/dsa-2577 vendor-advisoryx_refsource_DEBIAN
- http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/ x_refsource_CONFIRMVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:175 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2012/11/20/3 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/56604 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-1640-1 vendor-advisoryx_refsource_UBUNTU
- https://bugzilla.redhat.com/show_bug.cgi?id=871612 x_refsource_MISC
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80218 vdb-entryx_refsource_XF
Change history (0)
No recorded changes yet.