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Debian Security Bug TrackerDEBIANCVE:CVE-2021-3737

HistoryMar 04, 2022 - 7:15 p.m.

CVE-2021-3737

2022-03-0419:15:08

Debian Security Bug Tracker

security-tracker.debian.org

python

http

client

vulnerability

remote attacker

cpu

system availability

http server

unix

CVSS2

7.1

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:N/I:N/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.016

Percentile

87.3%

JSON

A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.

OSVersionArchitecturePackageVersionFilename
Debian12allpypy3< 7.3.8+dfsg-1pypy3_7.3.8+dfsg-1_all.deb
Debian11allpypy3<= 7.3.5+dfsg-2+deb11u2pypy3_7.3.5+dfsg-2+deb11u2_all.deb
Debian999allpypy3< 7.3.8+dfsg-1pypy3_7.3.8+dfsg-1_all.deb
Debian13allpypy3< 7.3.8+dfsg-1pypy3_7.3.8+dfsg-1_all.deb
Debian11allpython2.7<= 2.7.18-8+deb11u1python2.7_2.7.18-8+deb11u1_all.deb
Debian11allpython3.9<= 3.9.2-1python3.9_3.9.2-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	pypy3	< 7.3.8+dfsg-1	pypy3_7.3.8+dfsg-1_all.deb
Debian	11	all	pypy3	<= 7.3.5+dfsg-2+deb11u2	pypy3_7.3.5+dfsg-2+deb11u2_all.deb
Debian	999	all	pypy3	< 7.3.8+dfsg-1	pypy3_7.3.8+dfsg-1_all.deb
Debian	13	all	pypy3	< 7.3.8+dfsg-1	pypy3_7.3.8+dfsg-1_all.deb
Debian	11	all	python2.7	<= 2.7.18-8+deb11u1	python2.7_2.7.18-8+deb11u1_all.deb
Debian	11	all	python3.9	<= 3.9.2-1	python3.9_3.9.2-1_all.deb