CVE-2010-2074 Security feature bypass in n/a

Medium 6.8 Published 16 Jun 2010 Updated 7 Aug 2024

Man-in-the-middle attackers can spoof SSL servers via crafted certificates due to improper null character handling in w3m when server verification is enabled.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2010-2074?

CVE-2010-2074 is a medium-severity vulnerability in n/a, published on 16 Jun 2010. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

istream.c in w3m 0.5.2 and possibly other versions, when ssl_verify_server is enabled, does not properly handle a '\0' character in a domain name in the (1) subject's Common Name or (2) Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Weakness: CWE-20

Which versions are affected by CVE-2010-2074?

It affects 1 product.

Linux distribution packages (6)

`w3m` Red Hat:enterprise_linux:5::client	All versions	`0:0.5.1-17.el5_5`
`w3m-debuginfo` Red Hat:enterprise_linux:5::client	All versions	`0:0.5.1-17.el5_5`
`w3m-img` Red Hat:enterprise_linux:5::client	All versions	`0:0.5.1-17.el5_5`
`w3m` Red Hat:enterprise_linux:5::server	All versions	`0:0.5.1-17.el5_5`
`w3m-debuginfo` Red Hat:enterprise_linux:5::server	All versions	`0:0.5.1-17.el5_5`
`w3m-img` Red Hat:enterprise_linux:5::server	All versions	`0:0.5.1-17.el5_5`

Products include W3m W3m.

How do I fix CVE-2010-2074?

Upgrade to a fixed version.

Is CVE-2010-2074 being exploited?

There is no known exploitation of CVE-2010-2074 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2010-2074, GHSA-xwjm-4v2q-p47f, RHSA-2010:0565.