Critical severity · published Dec 7, 2017
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…
9.8
CVSS
6.3%
EPSS
No
On KEV
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
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.3% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
7.0; 8.0 · source: NVD
ME
Mercurial · Mercurial
before 4.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-17458
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-17458
Third Party Advisory
http://www.securityfocus.com/bid/102926
Issue Tracking
https://bz.mercurial-scm.org/show_bug.cgi?id=5730
Third Party Advisory
https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html
Mailing List
https://lists.debian.org/debian-lts-announce/2017/12/msg00027.html
Mailing List
https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html
Mailing List
https://lists.debian.org/debian-lts-announce/2018/07/msg00041.html
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