Bug 2532700 (CVE-2026-90778)

Summary: CVE-2026-90778 sipp: SIPp: Denial of Service via oversized SIP To header tags
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in SIPp. Unauthenticated remote attackers can send crafted Session Initiation Protocol (SIP) messages with oversized tag parameters in the 'To' header. This can lead to a buffer overflow in the `get_peer_tag()` function, allowing attackers to crash the SIPp process. This vulnerability results in a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2532927    
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Description OSIDB Bzimport 2026-09-13 11:51:34 UTC
SIPp through 3.7.7 contains a buffer overflow vulnerability in get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more. Unauthenticated remote attackers can send crafted SIP messages with oversized tag parameters to overflow the static buffer and crash the process.