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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 6.33% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 93.3% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-12-07 18:00Z8 YR AGO
- Last updated
- 2024-08-05 20:51Z2 YR AGO
- Reserved
- 2017-12-07
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base
- Data version
- 5.1
- Document digest
- d7b149eeff53bda5ed8f30f441767831abd957277077aca419c853fa59fa8dad
05 Affected products
06 References
- lists.debian.org[debian-lts-announce] 20171228 [SECURITY] [DLA 1224-1] mercurial security updatehttps://lists.debian.org/debian-lts-announce/2017/12/msg00027.html
- www.mercurial-scm.orghttps://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.4.1_.282017-11-07.29
- lists.debian.org[debian-lts-announce] 20180727 [SECURITY] [DLA 1414-2] mercurial regression updatehttps://lists.debian.org/debian-lts-announce/2018/07/msg00041.html
- lists.debian.org[debian-lts-announce] 20180705 [SECURITY] [DLA 1414-1] mercurial security updatehttps://lists.debian.org/debian-lts-announce/2018/07/msg00005.html
- www.mercurial-scm.orghttps://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/107333.html
- www.securityfocus.com102926http://www.securityfocus.com/bid/102926
- bz.mercurial-scm.orghttps://bz.mercurial-scm.org/show_bug.cgi?id=5730
- confluence.atlassian.comhttps://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html
- lists.debian.org[debian-lts-announce] 20200731 [SECURITY] [DLA 2293-1] mercurial security updatehttps://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
07 Fixed in
Debian 12
- mercurial Fixed in 4.4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- mercurial Fixed in 4.4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- mercurial Fixed in 4.4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- mercurial Fixed in 2.8.2-1ubuntu1.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- mercurial Fixed in 3.7.3-1ubuntu1.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.