CVE-2017-2625

Publication date 27 July 2018

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
libxdmcp 22.10 kinetic
Fixed 1:1.1.2-3
22.04 LTS jammy
Fixed 1:1.1.2-3
21.10 impish
Fixed 1:1.1.2-3
21.04 hirsute
Fixed 1:1.1.2-3
20.10 groovy
Fixed 1:1.1.2-3
20.04 LTS focal
Fixed 1:1.1.2-3
19.10 eoan
Fixed 1:1.1.2-3
19.04 disco
Fixed 1:1.1.2-3
18.10 cosmic Ignored end of life
18.04 LTS bionic
Fixed 1:1.1.2-3
17.10 artful Ignored end of life
17.04 zesty Ignored end of life
16.10 yakkety Ignored end of life
16.04 LTS xenial
14.04 LTS trusty
12.04 LTS precise Ignored end of life

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Notes

tyhicks

1.1.2 and lower are affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libxdmcp

Severity score breakdown

Parameter Value
Base score 5.5 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N