CVE-2010-4237 Mercurial Improper Certificate Validation vulnerability
Mercurial fails to verify SSL certificate Common Names, allowing attackers to perform man-in-the-middle attacks and intercept data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2010-4237?
CVE-2010-4237 is a medium-severity vulnerability in mercurial, published on 29 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-295
Which versions are affected by CVE-2010-4237?
3 open source packages ship an affected version, including mercurial. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mercurial PyPI | All versions | 1.6.4 |
mercurial PyPI | All versions | 1.6.4 |
mercurial PyPI | All versions | 1.6.4 |
Products include Mercurial Mercurial.
How do I fix CVE-2010-4237?
Upgrade mercurial to 1.6.4 or later.
Is CVE-2010-4237 being exploited?
There is no known exploitation of CVE-2010-4237 in the wild and no public exploit code.
Other vulnerabilities in mercurial
- CVE-2018-13347 Mercurial mishandles integer addition and subtraction
- CVE-2018-17983 Mercurial Out-of-bounds Read vulnerability
- CVE-2018-13346 Mercurial Improper Input Validation vulnerability
- CVE-2018-13348 Mercurial Improper Input Validation vulnerability
- CVE-2014-9462 Mercurial vulnerable to arbitrary command execution via a crafted repository name in a clone command
Sources
Also known as DEBIAN-CVE-2010-4237, GHSA-7gf7-7wx4-mxmw, PYSEC-2026-665.