Access Restriction Bypass Affecting openssh package, versions <1:5.8p1-2


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.7% (81st percentile)

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  • Snyk IDSNYK-DEBIAN10-OPENSSH-368889
  • published10 Feb 2011
  • disclosed10 Feb 2011

Introduced: 10 Feb 2011

CVE-2011-0539  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade Debian:10 openssh to version 1:5.8p1-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

The key_certify function in usr.bin/ssh/key.c in OpenSSH 5.6 and 5.7, when generating legacy certificates using the -t command-line option in ssh-keygen, does not initialize the nonce field, which might allow remote attackers to obtain sensitive stack memory contents or make it easier to conduct hash collision attacks.

CVSS Base Scores

version 3.1