SSH
CVE-2013-4548
MEDIUM
Severity by source
AV:N/AC:M/Au:S/C:P/I:P/A:P
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
AV:N/AC:M/Au:S/C:P/I:P/A:P
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
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. Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable. No vendor patch available.
Technical ContextAI
This vulnerability is classified under CWE-264. 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. Affected products include: Openbsd Openssh.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Same technique Privilege Escalation
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External POC / Exploit Code
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