Out-of-Bounds Affecting shadow package, versions <1:4.4-4.1+deb9u1


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.54% (77th percentile)
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NVD
9.8 critical
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Red Hat
4.5 medium

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  • Snyk ID SNYK-DEBIAN9-SHADOW-306269
  • published 4 Aug 2017
  • disclosed 4 Aug 2017

How to fix?

Upgrade Debian:9 shadow to version 1:4.4-4.1+deb9u1 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:9 relevant fixed versions and status.

In shadow before 4.5, the newusers tool could be made to manipulate internal data structures in ways unintended by the authors. Malformed input may lead to crashes (with a buffer overflow or other memory corruption) or other unspecified behaviors. This crosses a privilege boundary in, for example, certain web-hosting environments in which a Control Panel allows an unprivileged user account to create subaccounts.