CVEvulnerability
CVE-2013-4548
6.0 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2013-11-08
- Last modified
- 2026-06-16
- Assigner
- [email protected]
- CVSS 2.0 ([email protected])
- 6.0 MEDIUM — AV:N/AC:M/Au:S/C:P/I:P/A:P
- Weaknesses
- CWE-264
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.
Affected configurations
• openbsd openssh 6.2
• openbsd openssh 6.3
Related
Weakness · not in database (1)
References
- http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00017.html lists.opensuse.org
- http://marc.info/?l=bugtraq&m=141576985122836&w=2 marc.info
- http://openwall.com/lists/oss-security/2013/11/08/3 openwall.com
- http://www.openssh.com/txt/gcmrekey.adv Vendor Advisory
- http://www.ubuntu.com/usn/USN-2014-1 www.ubuntu.com
- http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00017.html lists.opensuse.org
- http://marc.info/?l=bugtraq&m=141576985122836&w=2 marc.info
- http://openwall.com/lists/oss-security/2013/11/08/3 openwall.com
- http://www.openssh.com/txt/gcmrekey.adv Vendor Advisory
- http://www.ubuntu.com/usn/USN-2014-1 www.ubuntu.com