CVE-2015-3246
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.
How to fix
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA due date: Sep 9, 2026- libuser_project libuser0.56.13-8, 0.60-7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libuser_project libuser | v < 0.56.13-8, 0.60 ≤ v < 0.60-7 | 0.56.13-8, 0.60-7 |
| redhat enterprise_linux | 5.0, 6.0, 7.0 | — |
| opensuse opensuse | 13.2 | — |
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