CVE-2013-4548

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Summary

CVECVE-2013-4548
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2013-11-08 15:55:13 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 6 from [email protected]

AV:N/AC:M/Au:S/C:P/I:P/A:P

Problem Types: CWE-264 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:M/Au:S/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openbsd Openssh 6.2 All All All
Application Openbsd Openssh 6.3 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
USN-2014-1: OpenSSH vulnerability | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
www.openssh.com/txt/gcmrekey.adv af854a3a-2127-422b-91ae-364da2661108 www.openssh.com Vendor Advisory
'[security bulletin] HPSBUX03188 SSRT101487 rev.1 - HP-UX running HP Secure Shell, Remote Denial of S' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info
[security-announce] openSUSE-SU-2013:1726-1: important: openssh: securit af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
oss-security - Re: CVE Request - OpenSSH af854a3a-2127-422b-91ae-364da2661108 openwall.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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