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Key Management Errors Affecting libxdmcp package, versions <1:1.1.1-1+deb8u1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
5.5 medium
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Red Hat
6.5 medium

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  • Snyk ID SNYK-DEBIAN8-LIBXDMCP-272052
  • published 27 Jun 2018
  • disclosed 27 Jul 2018
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Introduced: 27 Jun 2018

CVE-2017-2625 Open this link in a new tab
CWE-320 Open this link in a new tab
CWE-331 Open this link in a new tab

How to fix?

Upgrade Debian:8 libxdmcp to version 1:1.1.1-1+deb8u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxdmcp package and not the libxdmcp package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

It was discovered that libXdmcp before 1.1.2 including used weak entropy to generate session keys. On a multi-user system using xdmcp, a local attacker could potentially use information available from the process list to brute force the key, allowing them to hijack other users' sessions.