Bug 2140060 - CVE-2022-43680 expat: use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations [fedora-35]
Summary: CVE-2022-43680 expat: use-after free caused by overeager destruction of a sha...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: expat
Version: 35
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Joe Orton
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: CVE-2022-43680
TreeView+ depends on / blocked
 
Reported: 2022-11-04 10:24 UTC by Sandipan Roy
Modified: 2022-12-08 13:58 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2022-12-08 13:58:59 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Sandipan Roy 2022-11-04 10:24:02 UTC
More information about this security flaw is available in the following bug:

http://bugzilla.redhat.com/show_bug.cgi?id=2140059

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Comment 1 Sandipan Roy 2022-11-04 10:24:04 UTC
Use the following template to for the 'fedpkg update' request to submit an
update for this issue as it contains the top-level parent bug(s) as well as
this tracking bug.  This will ensure that all associated bugs get updated
when new packages are pushed to stable.

=====

# bugfix, security, enhancement, newpackage (required)
type=security

# low, medium, high, urgent (required)
severity=medium

# testing, stable
request=testing

# Bug numbers: 1234,9876
bugs=2140059,2140060

# Description of your update
notes=Security fix for [PUT CVEs HERE]

# Enable request automation based on the stable/unstable karma thresholds
autokarma=True
stable_karma=3
unstable_karma=-3

# Automatically close bugs when this marked as stable
close_bugs=True

# Suggest that users restart after update
suggest_reboot=False

======

Additionally, you may opt to use the bodhi web interface to submit updates:

https://bodhi.fedoraproject.org/updates/new

Comment 2 Ben Cotton 2022-11-29 19:02:28 UTC
This message is a reminder that Fedora Linux 35 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 35 on 2022-12-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '35'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the 'version' 
to a later Fedora Linux version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora Linux 35 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora Linux, you are encouraged to change the 'version' to a later version
prior to this bug being closed.

Comment 3 Tomas Korbar 2022-12-08 13:58:59 UTC
Already fixed by rebase to 2.5.0.


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