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CVE-2017-17458

Published: Dec 7, 2017Updated: May 13, 2026 Sources: CVE List NVD GHSA BDUCWE-78
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
6.3%
Top 7.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-78

Affected Products

n/an/a
mercurialmercurial
On-prem
DevTools & CI / source-control
debian linuxdebian
On-premOS
Operating Systems / linux-distro
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
MercurialMatt Mackall
On-prem
DevTools & CI / source-control
mercurialoss-projectDevTools & CIaka hg, mercurial scm, scm
debianoss-projectGBOperating Systemsaka debian gnu/linux
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
matt mackallindividual-devDevTools & CIaka mercurial
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://lists.debian.org/debian-lts-announce/2017/12/msg00027.html
lists.debian.org
https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.4.1_.282017-11-07.29
mercurial-scm.org
https://lists.debian.org/debian-lts-announce/2018/07/msg00041.html
lists.debian.org
and 13 more references View all →

Timeline

Published
Dec 7, 2017
Last Updated
May 13, 2026

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