CVE-2021-21240

Description

httplib2 is a comprehensive HTTP client library for Python. In httplib2 before version 0.19.0, a malicious server which responds with long series of "\xa0" characters in the "www-authenticate" header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library.

Weakness classification

• CWE-400: Uncontrolled Resource Consumption

Primary references

• security-advisories@github.com — Patch, Third Party Advisory
• security-advisories@github.com — Patch, Third Party Advisory
• security-advisories@github.com — Exploit, Mitigation, Third Party Advisory
• security-advisories@github.com — Product, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Mitigation, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Product, Third Party Advisory