CVE-2021-3733
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.
CVE-2021-3733
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2021-3733
python
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "n/a",
"product": "python",
"versions": [
{
"status": "affected",
"version": "Fixed in python v3.6.14, python v3.7.11, python v3.8.10, python v3.9.5."
}
]
}
]- Related CVEs
- CVE-2021-3733
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #21637 · Revision 1
- Added to Heist Feed
- Publisher date