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DebianDEBIAN:DLA-2808-1:24976

HistoryNov 05, 2021 - 9:21 a.m.

[SECURITY] [DLA 2808-1] python3.5 security update

2021-11-0509:21:01

lists.debian.org

7.1 High

CVSS2

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

7.5 High

CVSS3

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

8 High

AI Score

Confidence

High

0.016 Low

EPSS

Percentile

87.3%

JSON

Debian LTS Advisory DLA-2808-1 [email protected]
https://www.debian.org/lts/security/ Utkarsh Gupta
November 05, 2021 https://wiki.debian.org/LTS

Package : python3.5
Version : 3.5.3-1+deb9u5
CVE ID : CVE-2021-3733 CVE-2021-3737

There were a couple of vulnerabilites found in src:python3.5, the
Python interpreter v3.5, and are as follows:

CVE-2021-3733

The ReDoS-vulnerable regex has quadratic worst-case complexity
and it allows cause a denial of service when identifying
crafted invalid RFCs. This ReDoS issue is on the client side
and needs remote attackers to control the HTTP server.

CVE-2021-3737

HTTP client can get stuck infinitely reading len(line) &lt; 64k
lines after receiving a &#x27;100 Continue&#x27; HTTP response. This
could lead to the client being a bandwidth sink for anyone
in control of a server.

For Debian 9 stretch, these problems have been fixed in version
3.5.3-1+deb9u5.

We recommend that you upgrade your python3.5 packages.

For the detailed security status of python3.5 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/python3.5

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

OSVersionArchitecturePackageVersionFilename
Debian10arm64python3.7-dbg< 3.7.3-2+deb10u5python3.7-dbg_3.7.3-2+deb10u5_arm64.deb
Debian10i386python2.7< 2.7.16-2+deb10u2python2.7_2.7.16-2+deb10u2_i386.deb
Debian10alllibpython2.7-testsuite< 2.7.16-2+deb10u2libpython2.7-testsuite_2.7.16-2+deb10u2_all.deb
Debian10i386libpython2.7-dbg< 2.7.16-2+deb10u2libpython2.7-dbg_2.7.16-2+deb10u2_i386.deb
Debian10arm64libpython2.7-stdlib< 2.7.16-2+deb10u2libpython2.7-stdlib_2.7.16-2+deb10u2_arm64.deb
Debian9i386python3.5-dev< 3.5.3-1+deb9u5python3.5-dev_3.5.3-1+deb9u5_i386.deb
Debian10armhfpython3.7-dbg< 3.7.3-2+deb10u5python3.7-dbg_3.7.3-2+deb10u5_armhf.deb
Debian9allidle-python3.5< 3.5.3-1+deb9u5idle-python3.5_3.5.3-1+deb9u5_all.deb
Debian10armhflibpython3.7-dbg< 3.7.3-2+deb10u5libpython3.7-dbg_3.7.3-2+deb10u5_armhf.deb
Debian10armhfpython3.7-minimal< 3.7.3-2+deb10u5python3.7-minimal_3.7.3-2+deb10u5_armhf.deb

OS	Version	Architecture	Package	Version	Filename
Debian	10	arm64	python3.7-dbg	< 3.7.3-2+deb10u5	python3.7-dbg_3.7.3-2+deb10u5_arm64.deb
Debian	10	i386	python2.7	< 2.7.16-2+deb10u2	python2.7_2.7.16-2+deb10u2_i386.deb
Debian	10	all	libpython2.7-testsuite	< 2.7.16-2+deb10u2	libpython2.7-testsuite_2.7.16-2+deb10u2_all.deb
Debian	10	i386	libpython2.7-dbg	< 2.7.16-2+deb10u2	libpython2.7-dbg_2.7.16-2+deb10u2_i386.deb
Debian	10	arm64	libpython2.7-stdlib	< 2.7.16-2+deb10u2	libpython2.7-stdlib_2.7.16-2+deb10u2_arm64.deb
Debian	9	i386	python3.5-dev	< 3.5.3-1+deb9u5	python3.5-dev_3.5.3-1+deb9u5_i386.deb
Debian	10	armhf	python3.7-dbg	< 3.7.3-2+deb10u5	python3.7-dbg_3.7.3-2+deb10u5_armhf.deb
Debian	9	all	idle-python3.5	< 3.5.3-1+deb9u5	idle-python3.5_3.5.3-1+deb9u5_all.deb
Debian	10	armhf	libpython3.7-dbg	< 3.7.3-2+deb10u5	libpython3.7-dbg_3.7.3-2+deb10u5_armhf.deb
Debian	10	armhf	python3.7-minimal	< 3.7.3-2+deb10u5	python3.7-minimal_3.7.3-2+deb10u5_armhf.deb