Vulnerability CVE-2017-17458
Published: 2017-12-07

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.

Type:

CWE-78

 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') )

CVSS2 => (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
10/10
10/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Mercurial -> Mercurial 
Debian -> Debian linux 

 References:
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://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
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