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CVE-2015-3246

7.4 · HIGHActively Exploited

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 (inc…

Published Aug 11, 2015redhatCWE-264EPSS 8.50%

Overview

CVE-2015-3246 is a high-severity vulnerability affecting redhat enterprise_linux. It was published on August 11, 2015 and has a CVSS 3.1 base score of 7.4 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
libuser_projectlibuser>= 0, < 0.56.13-8Affected

References

Reflists.fedoraproject.org/pipermail/package-announce/2015-August/163044.htmlReflists.fedoraproject.org/pipermail/package-announce/2015-July/162947.htmlReflists.opensuse.org/opensuse-security-announce/2015-08/msg00000.htmlRefrhn.redhat.com/errata/RHSA-2015-1482.htmlRefrhn.redhat.com/errata/RHSA-2015-1483.htmlRefwww.securityfocus.com/bid/76022Refwww.securitytracker.com/id/1033040Refaccess.redhat.com/articles/1537873Refwww.exploit-db.com/exploits/44633/Refwww.qualys.com/2015/07/23/cve-2015-3245-cve-2015-3246/cve-2015-3245-cve-2015-3246.txt

How CyberStrike helps

Frequently asked questions

What is CVE-2015-3246?

CVE-2015-3246 is a high-severity vulnerability affecting redhat enterprise_linux. It was published on August 11, 2015 and has a CVSS 3.1 base score of 7.4 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2015-3246?

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-3246?

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2015-3246?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-3246 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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