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TI-2023-12676 Aliases CVE-2023-28097

OpenSIPS has vulnerability in the Content-Length Parser

Priority MEDIUM 41CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.9 and 3.2.6, a malformed SIP message containing a large _Content-Length_ value and a specially crafted Request-URI causes a segmentation fault in OpenSIPS. This issue occurs when a large amount of shared memory using the `-m` flag was allocated to OpenSIPS, such as 10 GB of RAM. On the test system, this issue occurred when shared memory was set to `2362` or higher. This issue is fixed in versions 3.1.9 and 3.2.6. The only workaround is to guarantee that the Content-Length value of input messages is never larger than `2147483647`.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00969 62nd percentileScored 2026-11-07
Fix Fixed opensips (OpenSIPS): 3.1.9, 3.2.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenSIPSopensipsbefore 3.1.9; 3.2.0 to before 3.2.63.1.9, 3.2.6Patch availableCNA
  • opensips VendorOpenSIPS Affected before 3.1.9; 3.2.0 to before 3.2.6 Fixed in 3.1.9, 3.2.6 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*before 3.1.9; 3.2.0 to before 3.2.6VulnerableOpenSIPS
  • cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:* Versions before 3.1.9; 3.2.0 to before 3.2.6 Vulnerable ·OpenSIPS

Remediation

  • Fix · CNA opensips (OpenSIPS) Fixed in 3.1.9, 3.2.6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-28097

References

Patch 1

Advisory 2

  • TI-2023-12674 OpenSIPS has vulnerability in the building the local negative replies CVSS 3.1HIGH 7.5
  • TI-2023-12311 OpenSIPS has vulnerability in the codec_delete_XX() functions CVSS 3.1HIGH 7.5
  • TI-2023-12310 OpenSIPS has vulnerability in the codec_delete_XX() functions CVSS 3.1HIGH 7.5
  • TI-2023-12309 OpenSIPS has vulnerability in the parse_to_param() function CVSS 3.1HIGH 7.5
  • TI-2023-12308 OpenSIPS has vulnerability in the parse_via() function CVSS 3.1HIGH 7.5
  • TI-2023-12307 OpenSIPS has vulnerability in the parse_uri() function CVSS 3.1HIGH 7.5
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences