CVE-2017-17458

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 17.97% Top 10%
Vendor Advisory mercurial-scm.org Vendor Advisory mercurial-scm.org
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2017-17458?
CVE-2017-17458 has been scored as a critical severity vulnerability.
How to fix CVE-2017-17458?
To fix CVE-2017-17458, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-17458 being actively exploited in the wild?
It is possible that CVE-2017-17458 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~18% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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