CVE-2021-3733
CVE-2021-3733: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium6.5
Medium [CVE-2021-3733] python: There's a flaw in urllib's AbstractBasicAuthHandler class
CVE-2021-3733Source published Source updated
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. Applications that use AbstractBasicAuthHandler, HTTPBasicAuthHandler and ProxyBasicAuthHandler may be affected by this flaw. Other classes may use the vulnerable method http_error_auth_reqed in AbstractBasicAuthHandler as well. This flaw is out of support scope for versions of Python shipped in Red Hat Enterprise Linux 7 base OS and Red Hat Enterprise Linux 6. For more information about…
- Affected products in this advisory
- Red Hat Enterprise Linux 8
- Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS
- Red Hat Enterprise Linux 6
- Red Hat package: python3
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- python3-0:3.6.8-39.el8_4
- python39:3.9-8050020210811100211.d428a79b
- python39-devel:3.9-8050020210811100211.d428a79b
- python38:3.8-8060020220120164031.5294be16
16 more entries in the full advisory.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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