SIPp through 3.7.7 contains a buffer overflow vulnerability in the get_header() function in src/sip_parser.cpp when processing SIP messages with… (CVE-2026-90780)
SIPp through 3.7.7 contains a buffer overflow vulnerability in the get_header() function in src/sip_parser.cpp when processing SIP messages with header content exceeding 20,490 bytes. Unauthenticated remote attackers can send crafted SIP messages with oversized headers to overflow the static buffer and crash the process.
AI Analysis
Technical Summary
The vulnerability in SIPp up to version 3.7.7 is a buffer overflow in the get_header() function of src/sip_parser.cpp. It is triggered by SIP messages with header content exceeding 20,490 bytes, allowing unauthenticated remote attackers to overflow a static buffer and cause a denial of service via process crash. The CVSS 3.1 score is 7.5 (high severity) with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, indicating network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality or integrity impact, but high impact on availability.
Potential Impact
Exploitation results in denial of service by crashing the SIPp process due to buffer overflow. There is no reported impact on confidentiality or integrity. The vulnerability can be triggered remotely without authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting the size of SIP message headers accepted or filtering oversized SIP messages at network boundaries to mitigate risk.
SIPp through 3.7.7 contains a buffer overflow vulnerability in the get_header() function in src/sip_parser.cpp when processing SIP messages with… (CVE-2026-90780)
Description
SIPp through 3.7.7 contains a buffer overflow vulnerability in the get_header() function in src/sip_parser.cpp when processing SIP messages with header content exceeding 20,490 bytes. Unauthenticated remote attackers can send crafted SIP messages with oversized headers to overflow the static buffer and crash the process.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in SIPp up to version 3.7.7 is a buffer overflow in the get_header() function of src/sip_parser.cpp. It is triggered by SIP messages with header content exceeding 20,490 bytes, allowing unauthenticated remote attackers to overflow a static buffer and cause a denial of service via process crash. The CVSS 3.1 score is 7.5 (high severity) with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, indicating network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality or integrity impact, but high impact on availability.
Potential Impact
Exploitation results in denial of service by crashing the SIPp process due to buffer overflow. There is no reported impact on confidentiality or integrity. The vulnerability can be triggered remotely without authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting the size of SIP message headers accepted or filtering oversized SIP messages at network boundaries to mitigate risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-fg45-qcjm-jcjr
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-90780"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6aa741a255bf5e2cf5489bd9
Added to database: 09/14/2026, 00:36:50 UTC
Last enriched: 09/14/2026, 00:41:54 UTC
Last updated: 09/14/2026, 02:21:25 UTC
Views: 4
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