What’s Vulnerable › Vulnerabilities
CVE-2009-0887
- Severity: medium (CVSS 6.6 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: yes
- Published: 2009-03-12 · updated 2026-06-16
- Weakness: CWE-189
Description
Integer signedness error in the _pam_StrTok function in libpam/pam_misc.c in Linux-PAM (aka pam) 1.0.3 and earlier, when a configuration file contains non-ASCII usernames, might allow remote attackers to cause a denial of service, and might allow remote authenticated users to obtain login access with a different user's non-ASCII username, via a login attempt.
Affected products
- Linux-PAM: through 1.0.3; 0.99.1.0, 0.99.2.0, 0.99.2.1, 0.99.3.0, 0.99.4.0, 0.99.5.0 (+13)
References
- http://openwall.com/lists/oss-security/2009/03/05/1
- http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?r1=1.9&%3Br2=1.10&%3Bview=patch
- http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?view=log
- http://secunia.com/advisories/34733
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:077
- http://www.securityfocus.com/bid/34010
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49110
- https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00398.html
- https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00420.html
- http://openwall.com/lists/oss-security/2009/03/05/1
- http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?r1=1.9&%3Br2=1.10&%3Bview=patch
- http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?view=log
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