Access Restriction Bypass Affecting shadow package, versions <1:4.0.15-10



    Attack Complexity High

    Threat Intelligence

    EPSS 0.15% (52nd percentile)
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4.9 medium

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  • Snyk ID SNYK-DEBIAN11-SHADOW-514563
  • published 28 May 2006
  • disclosed 28 May 2006

How to fix?

Upgrade Debian:11 shadow to version 1:4.0.15-10 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shadow package and not the shadow package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

useradd in shadow-utils before 4.0.3, and possibly other versions before 4.0.8, does not provide a required argument to the open function when creating a new user mailbox, which causes the mailbox to be created with unpredictable permissions and possibly allows attackers to read or modify the mailbox.