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USN-3276-2

USN-3276-2 · shadow regression

This page contains facts from public vulnerability sources. Check the original advisory before updating.

USN-3276-1 intended to fix a vulnerability in su. The solution introduced a regression in su signal handling. This update modifies the security fix. We apologize for the inconvenience. Original advisory details: Sebastian Krahmer discovered integer overflows in shadow utilities. A local attacker could possibly cause them to crash or potentially gain privileges via crafted input. (CVE-2016-6252) Tobias Stöckmann discovered a race condition in su. A local attacker could cause su to send SIGKILL to other processes with root privileges. (CVE-2017-2616)

Fix available

Published
Updated

Stack: system

Affected products and versions

  • shadow Ubuntu:14.04:LTS

    Versions
    • 1:4.1.5.1-1ubuntu6
    • 1:4.1.5.1-1ubuntu7
    • 1:4.1.5.1-1ubuntu8
    • 1:4.1.5.1-1ubuntu9
    • 1:4.1.5.1-1ubuntu9.1
    • 1:4.1.5.1-1ubuntu9.2
    • 1:4.1.5.1-1ubuntu9.4
    Affected ranges
    • ECOSYSTEM: < 1:4.1.5.1-1ubuntu9.5

    Update to 1:4.1.5.1-1ubuntu9.5

  • shadow Ubuntu:16.04:LTS

    Versions
    • 1:4.1.5.1-1.1ubuntu7
    • 1:4.2-3.1ubuntu1
    • 1:4.2-3.1ubuntu2
    • 1:4.2-3.1ubuntu3
    • 1:4.2-3.1ubuntu4
    • 1:4.2-3.1ubuntu5
    • 1:4.2-3.1ubuntu5.2
    Affected ranges
    • ECOSYSTEM: < 1:4.2-3.1ubuntu5.3

    Update to 1:4.2-3.1ubuntu5.3

Original sources

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