PT-2013-6355 · Openssh+4 · Openssh+4

Markus Friedl

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Published

1970-01-01

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Updated

2024-07-08

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CVE-2013-4548

CVSS v2.0

6.0

Medium

VectorAV:N/AC:M/Au:S/C:P/I:P/A:P
Name of the Vulnerable Software and Affected Versions OpenSSH versions 6.2 through 6.3
Description The issue allows remote authenticated users to bypass intended ForceCommand and login-shell restrictions via packet data that provides a crafted callback address. This is due to the mm newkeys from blob function in monitor wrap.c not properly initializing memory for a MAC context data structure when an AES-GCM cipher is used. The vulnerability can be exploited remotely by an attacker who has passed the authentication procedure, potentially leading to a breach of confidentiality, integrity, and availability of protected information.
Recommendations For OpenSSH versions 6.2 through 6.3, consider updating to a version where this issue is fixed, as the current version allows for the bypass of important security restrictions. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

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Weakness Enumeration

Related Identifiers

ALT-PU-2013-1071
ALT-PU-2024-3921
ALT-PU-2024-4077
ALT-PU-2024-4467
ALT-PU-2024-9513
BDU:2015-05680
BDU:2015-05681
BDU:2015-05682
BDU:2015-05683
BDU:2015-05684
CVE-2013-4548
HPSBUX03188
OPENSUSE-SU-2013_1726-1

Affected Products

Alt Linux
Hp-Ux
Ibm Aix
Openssh
Suse