CVE-2017-2625

Impact:
Moderate
Public Date:
2017-02-28
CWE:
CWE-331
Bugzilla:
1424987: CVE-2017-2625 libXdmcp: weak entropy usage for session keys
It was discovered that libXdmcp 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.

Find out more about CVE-2017-2625 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

CVSS v3 metrics

CVSS3 Base Score 6.5
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality High
Integrity Impact None
Availability Impact None

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 7 (libXdmcp) RHSA-2017:1865 2017-08-01

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 libXdmcp Will not fix
Red Hat Enterprise Linux 5 libXdmcp Will not fix

Acknowledgements

Red Hat would like to thank Eric Sesterhenn (X41 D-Sec GmbH) for reporting this issue.

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