Bug 2128977 (CVE-2022-40023)

Summary:	CVE-2022-40023 mako: REDoS in Lexer class
Product:	[Other] Security Response	Reporter:	Avinash Hanwate <ahanwate>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aekoroglu, agk, amoralej, aoconnor, apevec, bdettelb, bniver, cluster-maint, dking, eglynn, fdinitto, flucifre, gmeno, jjoyce, jschluet, lhh, mbenjamin, mburns, mgarciac, mhackett, nobody, oalbrigt, openstack-sig, python-maint, rhos-maint, sostapov, spower, srevivo, timothee.floure, vereddy
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mako 1.2.2	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the mako package. Affected versions of this package are vulnerable to Regular expression denial of service (ReDoS) attacks, affecting system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	2128978, 2128979, 2128981, 2129690, 2129691, 2129692, 2133604, 2133606, 2129693, 2129694, 2129695, 2129696, 2133605
Bug Blocks:	2125131

Description Avinash Hanwate 2022-09-22 07:42:56 UTC

Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse. This also affects babelplugin and linguaplugin.

https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c
https://pyup.io/vulnerabilities/CVE-2022-40023/50870/
https://github.com/sqlalchemy/mako/issues/366
https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21
https://lists.debian.org/debian-lts-announce/2022/09/msg00026.html

Comment 1 Avinash Hanwate 2022-09-22 07:48:24 UTC

Created python-pecan tracking bugs for this issue:

Affects: epel-all [bug 2128979]
Affects: fedora-all [bug 2128978]

Comment 2 Avinash Hanwate 2022-09-22 07:50:05 UTC

Created python-pecan tracking bugs for this issue:

Affects: openstack-rdo [bug 2128981]

Comment 4 Timothée Floure 2022-09-24 15:07:46 UTC

This package is a wayland notification daemon, not the python templating library: this bug is in the wrong place.

Comment 5 Timothée Floure 2022-09-24 15:11:33 UTC

You want the python-mako [1] package - adding its maintainer to the CC list.

[1] https://src.fedoraproject.org/rpms/python-mako