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Vulnerability record · CVE-2015-3245 · published 11 August 2015

CVE-2015-3245: Redhat libuser improper input validation vulnerability

Redhat · Libuser

Incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, allows local users to cause a denial of service (/etc/passwd corruption) via a newline character in the GECOS field.

2.1 CVSS 2.0 Low EPSS 5.3% · top 7.7% CWE-20 · Improper input validation
2.1CVSS 2.0 base score
5.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, allows local users to cause a denial of service (/etc/passwd corruption) via a newline character in the GECOS field.

AV:L/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163044.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162947.html
http://rhn.redhat.com/errata/RHSA-2015-1482.html
http://rhn.redhat.com/errata/RHSA-2015-1483.html
http://www.securityfocus.com/bid/76021
http://www.securitytracker.com/id/1033040
https://access.redhat.com/articles/1537873
https://www.exploit-db.com/exploits/44633/
https://www.qualys.com/2015/07/23/cve-2015-3245-cve-2015-3246/cve-2015-3245-cve-2015-3246.txt Exploit
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163044.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162947.html
http://rhn.redhat.com/errata/RHSA-2015-1482.html
http://rhn.redhat.com/errata/RHSA-2015-1483.html
http://www.securityfocus.com/bid/76021
http://www.securitytracker.com/id/1033040
https://access.redhat.com/articles/1537873
https://www.exploit-db.com/exploits/44633/
https://www.qualys.com/2015/07/23/cve-2015-3245-cve-2015-3246/cve-2015-3245-cve-2015-3246.txt Exploit

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2015-3245), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.