CVE-2019-3902

Publication date 22 April 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.9 · Medium

Score breakdown

A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.

From the Ubuntu Security Team

It was discovered that Mercurial mishandled symlinks in subrepositories. An attacker could use this vulnerability to write arbitrary files to the target's filesystem.

Status

Package Ubuntu Release Status
mercurial 22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco
Fixed 4.8.2-1ubuntu3.19.04.1
18.10 cosmic Ignored end of life
18.04 LTS bionic
Fixed 4.5.3-1ubuntu2.2
16.04 LTS xenial
14.04 LTS trusty

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Severity score breakdown

Parameter Value
Base score 5.9 · Medium
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-4086-1
    • Mercurial vulnerability
    • 6 August 2019
    • USN-5102-1
    • Mercurial vulnerabilities
    • 4 October 2021
    • USN-5102-2
    • Mercurial vulnerabilities
    • 16 March 2021

Other references