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CVE-2015-3245

27
FAUCET Score

CVE-2015-3245 is an incomplete blacklist vulnerability in the libuser library, specifically affecting the chfn function in versions before 0.56.13-8 and 0.60-7, as used in Red Hat's userhelper program. This local vulnerability allows an unauthenticated attacker to cause a denial of service by corrupting the /etc/passwd file through a newline character in the GECOS field. While the CVSS score is low (2.1), its FAUCET Risk Score is high (95/100) and it has a higher EPSS score than 93% of all CVEs, indicating a greater likelihood of exploitation. Exploit intelligence shows available Metasploit modules and ExploitDB entries, with community discussion and media coverage indicating significant attention to this issue.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.56.13-5CPE matchmatch criteria
cpe:2.3:a:redhat:libuser:*:*:*:*:*:*:*:*
0.60-1CPE matchmatch criteria
cpe:2.3:a:redhat:libuser:0.60-1:*:*:*:*:*:*:*
0.60-2CPE matchmatch criteria
cpe:2.3:a:redhat:libuser:0.60-2:*:*:*:*:*:*:*
0.60-3CPE matchmatch criteria
cpe:2.3:a:redhat:libuser:0.60-3:*:*:*:*:*:*:*
0.60-4CPE matchmatch criteria
cpe:2.3:a:redhat:libuser:0.60-4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.27%
Probability of exploitation in next 30 days
EPSS Percentile
91.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: Libuser roothelper Privilege Escalation · Jul 24, 2015
ExploitDB: EDB-44633 · May 16, 2018
This CVE's current EPSS score of 0.0527 is in the 99th percentile among its peer group of 2,096 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libuser-0:0.56.13-8.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libuser-0:0.60-7.ael7b_1
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libuser

Vendor Advisories (1)

redhatCVE-2015-3245Moderate

libuser: does not filter newline characters in the GECOS field

Jul 23, 2015

References

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