Vulnerability CVE-2015-3245
Published: 2015-08-11

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.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
userhelper/libuser Multiple vulns
Qualys
24.07.2015
Med.
Libuser roothelper Privilege Escalation
Brendan Coles
14.05.2018

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Redhat -> Libuser 

 References:
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
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