Bug 2532928

Summary: CVE-2026-90779 sipp: SIPp: Denial of Service via oversized SIP authentication challenge parameters [fedora-all]
Product: [Fedora] Fedora Reporter: Vladimir Vasilev <vvasilev>
Component: sippAssignee: Peter Lemenkov <lemenkov>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: lemenkov
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["23976780-4ffe-4fab-9583-9f6d7449ee37"]}
Fixed In Version: sipp-3.7.7-5.fc45 sipp-3.7.7-5.fc44 sipp-3.7.7-5.fc43 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-09-26 00:15:33 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: 2532699    

Description Vladimir Vasilev 2026-09-14 07:16:28 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.

SIPp through 3.7.7 contains a stack buffer overflow vulnerability in createAuthHeader() when processing SIP authentication challenges with oversized algorithm parameters. A malicious SIP server can send a crafted 401 or 407 challenge to corrupt the stack and crash the client process.

Comment 1 Fedora Update System 2026-09-17 14:47:58 UTC
FEDORA-2026-e377b4938d (sipp-3.7.7-5.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-e377b4938d

Comment 2 Fedora Update System 2026-09-17 14:48:03 UTC
FEDORA-2026-b0077de9df (sipp-3.7.7-5.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-b0077de9df

Comment 3 Fedora Update System 2026-09-17 14:48:09 UTC
FEDORA-2026-3059115f48 (sipp-3.7.7-5.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-3059115f48

Comment 4 Fedora Update System 2026-09-18 01:33:33 UTC
FEDORA-2026-b0077de9df 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-b0077de9df`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-b0077de9df

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

Comment 5 Fedora Update System 2026-09-18 01:58:41 UTC
FEDORA-2026-3059115f48 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-3059115f48`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3059115f48

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

Comment 6 Fedora Update System 2026-09-18 02:15:22 UTC
FEDORA-2026-e377b4938d has been pushed to the Fedora 44 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-e377b4938d`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-e377b4938d

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

Comment 7 Fedora Update System 2026-09-26 00:15:33 UTC
FEDORA-2026-3059115f48 (sipp-3.7.7-5.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Fedora Update System 2026-09-26 01:22:18 UTC
FEDORA-2026-e377b4938d (sipp-3.7.7-5.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 9 Fedora Update System 2026-09-26 01:30:10 UTC
FEDORA-2026-b0077de9df (sipp-3.7.7-5.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.