CVE-2006-0883

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-03-07 · updated 2026-06-16
Weakness: CWE-399

Description

OpenSSH on FreeBSD 5.3 and 5.4, when used with OpenPAM, does not properly handle when a forked child process terminates during PAM authentication, which allows remote attackers to cause a denial of service (client connection refusal) by connecting multiple times to the SSH server, waiting for the password prompt, then disconnecting.

Affected products

FreeBSD: 5.3, 5.3-release, 5.3-releng, 5.3-stable, 5.4-pre-release, 5.4-release (+2)
OpenSSH: 3.8.1p1

References

http://bugzilla.mindrot.org/show_bug.cgi?id=839
http://securityreason.com/securityalert/520
http://securitytracker.com/id?1015706
http://www.osvdb.org/23797
http://www.securityfocus.com/bid/16892
http://www.vupen.com/english/advisories/2006/0805
https://exchange.xforce.ibmcloud.com/vulnerabilities/25116
http://bugzilla.mindrot.org/show_bug.cgi?id=839
http://securityreason.com/securityalert/520
http://securitytracker.com/id?1015706

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