CVE-2023-27601

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Summary

CVECVE-2023-27601
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-03-15 22:15:00 UTC
Updated2023-11-07 04:10:00 UTC
DescriptionOpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, OpenSIPS crashes when a malformed SDP body is received and is processed by the `delete_sdp_line` function in the sipmsgops module. This issue can be reproduced by calling the function with an SDP body that does not terminate by a line feed (i.e. `\n`). The vulnerability was found while performing black-box fuzzing against an OpenSIPS server running a configuration that made use of the functions `codec_delete_except_re` and `codec_delete_re`. The same issue was also discovered while performing coverage guided fuzzing on the function `codec_delete_except_re`. The crash happens because the function `delete_sdp_line` expects that an SDP line is terminated by a line feed (`\n`): By abusing this vulnerability, an attacker is able to crash the server. It affects configurations containing functions that rely on the affected code, such as the function `codec_delete_except_re`. Due to the sanity check that is performed in the `del_lump` function, exploitation of this issue will generate an `abort` in the lumps processing function, resulting in a Denial of Service. This issue has been fixed in versions 3.1.7 and 3.2.4.

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Opensips Opensips All All All All

References

ReferenceSourceLinkTags
[sipmsgops] fix codec_delete_XX() parsing · OpenSIPS/opensips@8f87c7c · GitHub MISC github.com
opensips.org/docs/modules/3.3.x/sipmsgops.html MISC opensips.org
Vulnerability in the codec_delete_XX() functions · Advisory · OpenSIPS/opensips · GitHub MISC github.com
opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf MISC opensips.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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