Vulnerability Details CVE-2015-3246
libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, directly modifies /etc/passwd, which allows local users to cause a denial of service (inconsistent file state) by causing an error during the modification. NOTE: this issue can be combined with CVE-2015-3245 to gain privileges.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.088
EPSS Ranking 94.9%
CVSS Severity
CVSS v3 Score 5.1
CVSS v2 Score 7.2
Proposed Action
Red Hat libuser contains a race condition vulnerability that allows authenticated local users to corrupt the /etc/passwd file to cause a denial of service or privilege escalation.
Ransomware Campaign
Unknown
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163044.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162947.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00000.html
- http://rhn.redhat.com/errata/RHSA-2015-1482.html
- http://rhn.redhat.com/errata/RHSA-2015-1483.html
- http://www.securityfocus.com/bid/76022
- 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
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163044.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162947.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00000.html
- http://rhn.redhat.com/errata/RHSA-2015-1482.html
- http://rhn.redhat.com/errata/RHSA-2015-1483.html
- http://www.securityfocus.com/bid/76022
- 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
- https://blog.talosintelligence.com/uat-10147-chinese-speaking-adversary-integrates-agentic-ai-into-post-compromise-operations/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-3246
Products affected by CVE-2015-3246
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cpe:2.3:a:libuser_project:libuser:-
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cpe:2.3:a:libuser_project:libuser:0.56.10
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cpe:2.3:a:libuser_project:libuser:0.56.11
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cpe:2.3:a:libuser_project:libuser:0.56.12
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cpe:2.3:a:libuser_project:libuser:0.56.13
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cpe:2.3:a:libuser_project:libuser:0.60
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cpe:2.3:o:opensuse:opensuse:13.2
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cpe:2.3:o:redhat:enterprise_linux:5.0
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cpe:2.3:o:redhat:enterprise_linux:6.0
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cpe:2.3:o:redhat:enterprise_linux:7.0