# CVE-2013-2037: httplib2 incorrectly checks SSL certificate

Source: https://junglewise.ai/threats/cve-2013-2037-httplib2-incorrectly-checks-ssl-certificate  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2014-01-18  
License: CC BY 4.0 with a link back

CVE-2013-2037 · Severity: low · CVSS 3.1 · Published 2014-01-18

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.

Technologies: [httplib2 (PyPI)](https://junglewise.ai/threats/technologies/pypi-httplib2). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2013-2037 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2013-2037 being exploited in the wild.

**How severe is CVE-2013-2037?** Low severity, with a CVSS score of 3.1, published 18 January 2014.

**Which products and versions are affected?** httplib2 (PyPI) ECOSYSTEM:introduced=0,fixed=0.10.1, ECOSYSTEM:introduced=0,fixed=0.9.

**Is there a fix for CVE-2013-2037?** Yes. httplib2 (PyPI): upgrade to 0.10.1, 0.9 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2013-2037?** Check whether you run httplib2 (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- httplib2 (PyPI): upgrade to 0.10.1, 0.9 or later

  ```sh
  pip install "httplib2>=0.10.1"
  ```


## Affected products

- httplib2 (PyPI) ECOSYSTEM:introduced=0,fixed=0.10.1, ECOSYSTEM:introduced=0,fixed=0.9

## Identifiers

- CVE-2013-2037
- GHSA-q48q-77qv-cf9p
- PYSEC-2014-81

## Related threats

- [httplib2 unbounded decompression denial of service](https://junglewise.ai/threats/cve-2026-59939-httplib2-unbounded-decompression-denial-of-service)
- [Regular Expression Denial of Service (REDoS) in httplib2](https://junglewise.ai/threats/cve-2021-21240-regular-expression-denial-of-service-redos-in-httplib2)
- [CRLF injection in httplib2](https://junglewise.ai/threats/cve-2020-11078-crlf-injection-in-httplib2)