CVEvulnerability

CVE-2011-0539

7.5 HIGH Published 2011-02-10 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2011-02-10
Last modified
2026-06-16
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-264, CWE-457

Description

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.

Affected configurations

• openbsd openssh 5.6 • openbsd openssh 5.7

Related

Weakness · not in database (1)

Weakness · CWE (1)

  • CWE-457 Use of Uninitialized Variable weakness

References