Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2006-5051

Double Free

Published: Sep 27, 2006 | Modified: Apr 09, 2025
CVSS 3.x
8.1
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
9.3 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2006-5051
CWEhttps://cwe.mitre.org/data/definitions/415.html

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Weakness

The product calls free() twice on the same memory address.

Affected Software

NameVendorStart VersionEnd Version
OpensshOpenbsd*4.4 (including)
Red Hat Enterprise Linux 2.1RedHatopenssh-0:3.1p1-21*
Red Hat Enterprise Linux 3RedHatopenssh-0:3.6.1p2-33.30.12*
Red Hat Enterprise Linux 4RedHatopenssh-0:3.9p1-8.RHEL4.17*
OpensshUbuntudapper*
OpensshUbuntudevel*
OpensshUbuntuedgy*
OpensshUbuntufeisty*

Potential Mitigations

References

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