CVE-2023-28099

low-risk
Published 2023-03-15

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.9 and 3.2.6, if `ds_is_in_list()` is used with an invalid IP address string (`NULL` is illegal input), OpenSIPS will attempt to print a string from a random address (stack garbage), which could lead to a crash. All users of `ds_is_in_list()` without the `$si` variable as 1st parameter could be affected by this vulnerability to a larger, lesser or no extent at all, depending if the data passed to the function is a valid IPv4 or IPv6 address string or not. Fixes will are available starting with the 3.1.9 and 3.2.6 minor releases. There are no known workarounds.

Do I need to act?

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0.39% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Opensips

Affected Vendors

Opensips

References (6)

Patch https://github.com/OpenSIPS/opensips/commit/e2f13d374
Third Party Advisory https://github.com/OpenSIPS/opensips/issues/2780
Third Party Advisory https://github.com/OpenSIPS/opensips/security/advisories/GHSA-pfm5-6vhv-3ff3
Patch https://github.com/OpenSIPS/opensips/commit/e2f13d374
Third Party Advisory https://github.com/OpenSIPS/opensips/issues/2780
Third Party Advisory https://github.com/OpenSIPS/opensips/security/advisories/GHSA-pfm5-6vhv-3ff3
24
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal