CVE-2023-27598
OpenSIPS has vulnerability in the parse_via() function
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, sending a malformed `Via` header to OpenSIPS triggers a segmentation fault when the function `calc_tag_suffix` is called. A specially crafted `Via` header, which is deemed correct by the parser, will pass uninitialized strings to the function `MD5StringArray` which leads to the crash. Abuse of this vulnerability leads to Denial of Service due to a crash. Since the uninitialized string points to memory location `0x0`, no further exploitation appears to be possible. No special network privileges are required to perform this attack, as long as the OpenSIPS configuration makes use of functions such as `sl_send_reply` or `sl_gen_totag` that trigger the vulnerable code. This issue has been fixed in versions 3.1.7 and 3.2.4.
CVSS Scores
SSVC
- Decision:Attend
Timeline
- 2023-03-04 CVE Reserved
- 2023-03-15 CVE Published
- 2025-02-25 CVE Updated
- 2025-04-15 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-908: Use of Uninitialized Resource
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx | Third Party Advisory | |
| https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7 | 2023-03-21 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Opensips Search vendor "Opensips" | Opensips Search vendor "Opensips" for product "Opensips" | < 3.1.7 Search vendor "Opensips" for product "Opensips" and version " < 3.1.7" | - |
Affected
| ||||||
| Opensips Search vendor "Opensips" | Opensips Search vendor "Opensips" for product "Opensips" | >= 3.2.0 < 3.2.4 Search vendor "Opensips" for product "Opensips" and version " >= 3.2.0 < 3.2.4" | - |
Affected
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