Improper Input Validation Affecting shadow package, versions <1:4.1.5-1


Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    0.06% (24th percentile)

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  • Snyk ID SNYK-DEBIAN8-SHADOW-306186
  • published 27 Jun 2018
  • disclosed 4 Nov 2019

How to fix?

Upgrade Debian:8 shadow to version 1:4.1.5-1 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:8 relevant fixed versions and status.

There is a possible tty hijacking in shadow 4.x before 4.1.5 and sudo 1.x before 1.7.4 via "su - user -c program". The user session can be escaped to the parent session by using the TIOCSTI ioctl to push characters into the input buffer to be read by the next process.

CVSS Scores

version 3.1
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Snyk

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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NVD

7.8 high
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Red Hat

7.4 high