CVE-2019-3902
Published: 22 April 2019
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
mercurial Launchpad, Ubuntu, Debian |
bionic |
Released
(4.5.3-1ubuntu2.2)
|
| cosmic |
Ignored
(reached end-of-life)
|
|
| disco |
Released
(4.8.2-1ubuntu3.19.04.1)
|
|
| eoan |
Not vulnerable
(4.8.2-1ubuntu4)
|
|
| focal |
Not vulnerable
(4.8.2-1ubuntu4)
|
|
| groovy |
Not vulnerable
(4.8.2-1ubuntu4)
|
|
| hirsute |
Not vulnerable
(4.8.2-1ubuntu4)
|
|
| impish |
Not vulnerable
(4.8.2-1ubuntu4)
|
|
| jammy |
Not vulnerable
(4.8.2-1ubuntu4)
|
|
| precise |
Does not exist
|
|
| trusty |
Released
(2.8.2-1ubuntu1.4+esm1)
|
|
| upstream |
Released
(4.9-1)
|
|
| xenial |
Released
(3.7.3-1ubuntu1.2+esm2)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| 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 |