Wednesday 4 November
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Ubuntu notice covers two libuser flaws enabling local denial of service and possible privilege escalation

Severity
Medium
Exploited
Yes
Sources
1

security notice USN-8987-1 reports two local flaws in libuser. CVE-2015-3245 is caused by improper validation of the GECOS field, which can corrupt the passwd file and cause denial of service. CVE-2015-3246 comes from libuser editing the passwd file in place, which can leave it inconsistent and enable denial of service or possible privilege escalation.

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What to do

  1. Install the libuser package update referenced in Ubuntu security notice USN-8987-1.
  2. Restrict local account access on multi-user systems until the update is applied.

Written by AI from the sources, checked against them

Vulnerabilities

Full story timeline · 2 updates

  1. Wed 26 AugustCVE-2015-3246 added to CISA’s exploited listCISA KEV
  2. Tue 3 NovemberUSN-8987-1: libuser vulnerabilitiesUbuntu Security Notices

Who reported · 1 outlet

Ubuntu Security Notices

Who and what is in it

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