CVE-2018-13346
Publication date 6 July 2018
Last updated 25 August 2025
Ubuntu priority
Description
The mpatch_apply function in mpatch.c in Mercurial before 4.6.1 incorrectly proceeds in cases where the fragment start is past the end of the original data, aka OVE-20180430-0004.
From the Ubuntu Security Team
It was discovered that Mercurial incorrectly handled patch data. An attacker could possibly use this issue to cause a denial of service or other unspecified impact.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| mercurial | ||
| 18.04 LTS bionic |
Fixed 4.5.3-1ubuntu2.1
|
|
| 16.04 LTS xenial |
Fixed 3.7.3-1ubuntu1.1
|
|
| 14.04 LTS trusty |
Fixed 2.8.2-1ubuntu1.4
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |