CVE-2021-3733
Description
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
redhat
commercial·USaka red hat
netapp
commercial·US
fedoraproject
oss-project·USaka fedora project
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Сообщество свободного программного обеспечения
oss-projectaka fsf
Python Software Foundation
oss-project·USaka psf
and 9 more affected products View all →
Exploitability
1 exploit source identified
Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.
View exploit details Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Impact
References
https://bugs.python.org/issue43075
bugs.python.org
https://github.com/python/cpython/commit/3fbe96123aeb66664fa547a8f6022efa2dc8788f
github.com
https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fb1defe1
github.com
and 34 more references View all →
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