Vulnerability Report

CVE-2017-17458

RCE

Title: Mercurial RCE

RCE

Proof Of Concept

No public PoC currently indexed for CVE-2017-17458.

CWE Category CWE-78

Published Date Dec 07, 2017

Modified Date May 13, 2026

Exploit Status Not Found

Score 9.8 CVSS v3.0

Exploit Probability (EPSS)

17.25%

Vulnerability Summary

CVE-2017-17458: In Mercurial before 4.4.1, it is possible that a specially malformed repository can cause Git subrepositories to run arbitrary code in the form of a .git/hooks/post-update script checked into the repository. Typical use of Mercurial prevents construction of such repositories, but they can be created programmatically.

Impacted Vendors

mercurial 1

jenkins 1

Reference Links

http://www.securityfocus.com/bid/102926 https://bz.mercurial-scm.org/show_bug.cgi?id=5730 https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html https://lists.debian.org/debian-lts-announce/2017/12/msg00027.html https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html https://lists.debian.org/debian-lts-announce/2018/07/msg00041.html https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/107333.html https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.4.1_.282017-11-07.29 http://www.securityfocus.com/bid/102926 https://bz.mercurial-scm.org/show_bug.cgi?id=5730 https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html https://lists.debian.org/debian-lts-announce/2017/12/msg00027.html https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html https://lists.debian.org/debian-lts-announce/2018/07/msg00041.html https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/107333.html https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.4.1_.282017-11-07.29

CVSS v3.0

Source Entity [email protected]

Severity CRITICAL

9.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

CVSS v2.0

Source Entity [email protected]

Severity HIGH

10.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns