Bug 2564815

Summary:	CVE-2026-57185 asterisk: Asterisk: Denial of Service via crafted SIP NOTIFY request [fedora-43]
Product:	[Fedora] Fedora	Reporter:	gkamathe
Component:	asterisk	Assignee:	Peter Lemenkov <lemenkov>
Status:	ON_QA ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	43	CC:	bennie.joubert, jsmith.fedora, lemenkov
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["2786f33b-3c47-4b28-aaa8-27f8d34a61f7"]}
Fixed In Version:		Doc Type:	---
Doc Text:		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:
Embargoed:
Bug Depends On:
Bug Blocks:	2562102

Description gkamathe 2026-11-02 09:52:07 UTC

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.

Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may crash Asterisk through a buffer over-read in the `PJSIP MWI body parser` by sending a carefully crafted `SIP NOTIFY` request. The attacker must pass SIP authentication using either a username/password or `source IP address matching`. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.

Comment 1 Fedora Update System 2026-11-02 14:52:35 UTC

FEDORA-2026-64401a578b (asterisk-18.26.4-2.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-64401a578b

Comment 2 Fedora Update System 2026-11-03 03:15:57 UTC

FEDORA-2026-64401a578b has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-64401a578b`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-64401a578b

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

Comment 3 Fedora Update System 2026-11-05 16:09:51 UTC

FEDORA-2026-011a22de5e has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-011a22de5e`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-011a22de5e

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