CVE-2015-3246

چیست

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.

CISA: 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.

چه باید کرد

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.

مهلت برای نهادهای فدرال آمریکا: ۹ سپتامبر ۲۰۲۶

• lists.fedoraproject.org/pipermail/package-announce/2015-July/162947.h…
• rhn.redhat.com/errata/RHSA-2015-1482.html
• lists.fedoraproject.org/pipermail/package-announce/2015-August/163044…
• lists.opensuse.org/opensuse-security-announce/2015-08/msg00000.html
• rhn.redhat.com/errata/RHSA-2015-1483.html