CVE-2023-27600— OpenSIPS has vulnerability in the codec_delete_XX() functions

OpenSIPS has vulnerability in the codec_delete_XX() functions

OpenSIPS 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 is patched in versions 3.1.7 and 3.2.4.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

输入验证不恰当

OpenSIPS 输入验证错误漏洞

OpenSIPS是OpenSIPS 个人开发者的一个 GPL 许可的 SIP 服务器实现。 OpenSIPS 3.2版本及之前版本存在输入验证错误漏洞，该漏洞源于当收到格式错误的SDP主体并由sipmsgops模块中的“delete_sdp_line”函数处理时，系统会崩溃。

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