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CVE-2013-4548
The mm_newkeys_from_blob function in monitor_wrap.c in sshd in OpenSSH 6.2 and 6.3, when an AES-GCM cipher is used, does not properly…
Medium6.0EPSS 2.7%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
The mm_newkeys_from_blob function in monitor_wrap.c in sshd in OpenSSH 6.2 and 6.3, when an AES-GCM cipher is used, does not properly initialize memory for a MAC context data structure, which allows remote authenticated users to bypass intended ForceCommand and login-shell restrictions via packet data that provides a crafted callback address.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.0 | AV:N/AC:M/Au:S/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 2.7% · top 14% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.0.
Weakness
Affected products
n/a
- affected n/a
References (5)
- http://www.openssh.com/txt/gcmrekey.adv (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20131107 Re: CVE Request - OpenSSH (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- HPSBUX03188 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- openSUSE-SU-2013:1726 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-2014-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2013-4548)Record last updated .