Bug 2255044

Summary:	CVE-2023-48795 python-asyncssh: ssh: Prefix truncation attack on Binary Packet Protocol (BPP) [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Sandipan Roy <saroy>
Component:	python-asyncssh	Assignee:	Georg Sauthoff <fedora>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	39	CC:	fedora, ktdreyer
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	python-asyncssh-2.14.2-1.fc39	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-12-30 01:21:33 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2254210

Description Sandipan Roy 2023-12-18 17:36:24 UTC

More information about this security flaw is available in the following bug:

http://bugzilla.redhat.com/show_bug.cgi?id=2254210

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 2023-12-18 17:36:27 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=2254210,2255044

# 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 Georg Sauthoff 2023-12-21 12:34:09 UTC

Fixed in rawhide by version bump: https://koji.fedoraproject.org/koji/taskinfo?taskID=110645308

Comment 3 Georg Sauthoff 2023-12-21 12:34:59 UTC

In Fedora 38, a simple fix by update for this issue is blocked by upstream's python cryptography version requirements.

See also https://bugzilla.redhat.com/show_bug.cgi?id=2250331#c3 for details.

Comment 4 Fedora Update System 2023-12-21 12:47:36 UTC

FEDORA-2023-e77300e4b5 has been submitted as an update to Fedora 39. https://bodhi.fedoraproject.org/updates/FEDORA-2023-e77300e4b5

Comment 5 Fedora Update System 2023-12-22 02:52:12 UTC

FEDORA-2023-e77300e4b5 has been pushed to the Fedora 39 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2023-e77300e4b5`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2023-e77300e4b5

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2023-12-30 01:21:33 UTC

FEDORA-2023-e77300e4b5 has been pushed to the Fedora 39 stable repository.
If problem still persists, please make note of it in this bug report.