There's a flaw in urllib's AbstractBasicAuthHandler class.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 3.6.14, 3.7.11, 3.8.10, 3.9.5, 3.10.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- n/a python
Fixed in python v3.6.14, python v3.7.11, python v3.8.10, python v3.9.5.
- libpythonBitnami
fixed in 3.6.14; From 3.7.0 · fixed in 3.7.11; From 3.8.0 · fixed in 3.8.10; From 3.9.0 · fixed in 3.9.5
- pythonBitnami
fixed in 3.6.14; From 3.7.0 · fixed in 3.7.11; From 3.8.0 · fixed in 3.8.10; From 3.9.0 · fixed in 3.9.5
- python-minBitnami
fixed in 3.6.14; From 3.7.0 · fixed in 3.7.11; From 3.8.0 · fixed in 3.8.10; From 3.9.0 · fixed in 3.9.5; From 3.10.0 · fixed in 3.10.1