Improper Certificate Validation in Mercurial Mercurial



Published: 2019-10-29 | Updated: 2020-07-17
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2010-4237
CWE-ID CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Mercurial
Client/Desktop applications / Other client software

Vendor Mercurial

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Certificate Validation

EUVDB-ID: #VU30720

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2010-4237

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

Mercurial before 1.6.4 fails to verify the Common Name field of SSL certificates which allows remote attackers who acquire a certificate signed by a Certificate Authority to perform a man-in-the-middle attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Mercurial: 1.6.1 - 1.6.3

External links

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598841
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-4237
http://bz.mercurial-scm.org/show_bug.cgi?id=2407
http://security-tracker.debian.org/tracker/CVE-2010-4237


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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