Bug 2564868

Summary: CVE-2026-57195 asterisk: asterisk: Denial of Service via HTTP digest authentication in AMI [epel-9]
Product: [Fedora] Fedora EPEL Reporter: gkamathe
Component: asteriskAssignee: Peter Lemenkov <lemenkov>
Status: ON_QA --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: epel9CC: bennie.joubert, epel-packagers-sig, jsmith.fedora, lemenkov
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["5897a23b-8e14-497d-84bd-fba758823fee"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2562437    

Description gkamathe 2026-11-02 09:59:01 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, a NULL pointer dereference in the `Asterisk Manager Interface (AMI)` may allow an unauthenticated attacker to crash Asterisk when `Digest Authentication` is used via `HTTP`. The Asterisk `HTTP` web server, AMI, and AMI access via `HTTP` must all be enabled; each is disabled by default. The attacker must be able to connect to the `HTTP` server, which binds only to `127.0.0.1` by default even when enabled. 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 14:52:59 UTC 
FEDORA-EPEL-2026-002595a22b (asterisk-18.26.4-2.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-002595a22b
Comment 2 Fedora Update System 2026-11-03 03:13:13 UTC 
FEDORA-EPEL-2026-002595a22b has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-002595a22b

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 3 Fedora Update System 2026-11-04 21:13:50 UTC 
FEDORA-EPEL-2026-4e6e6af48a (asterisk-18.26.4-3.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-4e6e6af48a
Comment 4 Fedora Update System 2026-11-05 15:34:51 UTC 
FEDORA-EPEL-2026-4e6e6af48a has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-4e6e6af48a

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