Debian DLA-1072-1 : mercurial security update

Critical Nessus Plugin ID 102886

Synopsis

The remote Debian host is missing a security update.

Description

Two significant vulnerabilities were found in the Mercurial version control system which could lead to shell injection attacks and out-of-tree file overwrite.

CVE-2017-1000115

Mercurial's symlink auditing was incomplete prior to 4.3, and could be abused to write to files outside the repository.

CVE-2017-1000116

Mercurial was not sanitizing hostnames passed to ssh, allowing shell injection attacks on clients by specifying a hostname starting with
-oProxyCommand. This vulnerability is similar to those in Git (CVE-2017-1000117) and Subversion (CVE-2017-9800).

For Debian 7 'Wheezy', these problems have been fixed in version 2.2.2-4+deb7u5.

We recommend that you upgrade your mercurial packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected mercurial, and mercurial-common packages.

See Also

https://lists.debian.org/debian-lts-announce/2017/08/msg00032.html

https://packages.debian.org/source/wheezy/mercurial

Plugin Details

Severity: Critical

ID: 102886

File Name: debian_DLA-1072.nasl

Version: 3.6

Type: local

Agent: unix

Published: 2017/09/01

Updated: 2019/05/13

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:mercurial, p-cpe:/a:debian:debian_linux:mercurial-common, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/08/31

Vulnerability Publication Date: 2017/10/05

Reference Information

CVE: CVE-2017-1000115, CVE-2017-1000116