CVE-2013-4548
Last modified
CVE-2013-4548 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.67% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openbsd | Openssh | 6.2 |
| Openbsd | Openssh | 6.3 |
References
- http://www.openssh.com/txt/gcmrekey.advVendor Advisory
- http://www.openssh.com/txt/gcmrekey.advVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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