CVE-2023-27601— OpenSIPS has vulnerability in the codec_delete_XX() functions
Quick assessment
Affected
OpenSIPS opensips
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-27601
Vulnerability Information
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Vulnerability Title
OpenSIPS has vulnerability in the codec_delete_XX() functions
Source: CVE Program / CVE List V5
Vulnerability Description
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 has been fixed in versions 3.1.7 and 3.2.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenSIPS 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-27601
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Patches & Fixes for CVE-2023-27601 (1)
Vendor Advisories for CVE-2023-27601 (1)
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https://github.com/OpenSIPS/opensips/security/advisories/GHSA-xj5x-g52f-548h x_refsource_CONFIRM
Other References for CVE-2023-27601 (2)
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https://opensips.org/docs/modules/3.3.x/sipmsgops.html x_refsource_MISC
Same Patch Batch · OpenSIPS · 2023-03-15 · 11 CVEs total
| CVE-2023-27596 | 7.5 HIGH | OpenSIPS has vulnerability in the codec_delete_XX() functions |
| CVE-2023-27597 | 7.5 HIGH | OpenSIPS has vulnerability in the parse_uri() function |
| CVE-2023-27598 | 7.5 HIGH | OpenSIPS has vulnerability in the parse_via() function |
| CVE-2023-27599 | 7.5 HIGH | OpenSIPS has vulnerability in the parse_to_param() function |
| CVE-2023-27600 | 7.5 HIGH | OpenSIPS has vulnerability in the codec_delete_XX() functions |
| CVE-2023-28095 | 7.5 HIGH | OpenSIPS has vulnerability in the building the local negative replies |
| CVE-2023-28097 | 7.5 HIGH | OpenSIPS has vulnerability in the Content-Length Parser |
| CVE-2023-28098 | 5.9 MEDIUM | OpenSIPS has vulnerability in the Digest Authentication Parser |
| CVE-2023-28099 | 5.9 MEDIUM | OpenSIPS has vulnerability in the ds_is_in_list() function |
| CVE-2023-28096 | 4.5 MEDIUM | OpenSIPS has memory leak in cJSON lib |
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V. Comments for CVE-2023-27601
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