CVE-2009-0887
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.
Key facts
- CVSS score
- 6.6 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:L/AC:M/Au:S/C:C/I:C/A:C- Weakness (CWE)
- CWE-189
- EPSS score
- 1.9% (80th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-0884)
- Published
- March 12, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-0884 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
- linux-pam / linux-pam
References
- http://openwall.com/lists/oss-security/2009/03/05/1(Exploit)
- 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(Patch)
- 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
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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