CVE-2013-2037 httplib2 incorrectly checks SSL certificate

What is CVE-2013-2037?

CVE-2013-2037 is a low-severity vulnerability in Canonical Ubuntu Linux, published on 18 Jan 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

httplib2 0.7.2, 0.8, and earlier, after an initial connection is made, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

Weakness: CWE-20

Which versions are affected by CVE-2013-2037?

3 open source packages ship an affected version, including httplib2. It affects 2 products.

Products include Canonical Ubuntu Linux, Httplib2 Project Httplib2.

How do I fix CVE-2013-2037?

Upgrade httplib2 to a fixed version for your release line: 0.10.1 or 0.9.

Is CVE-2013-2037 being exploited?

There is no known exploitation of CVE-2013-2037 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2013-2037, GHSA-q48q-77qv-cf9p, PYSEC-2014-81.