Kamailio 5.5 Configuration File src/core/rvalue.c rve_destroy heap-based overflow ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Kamailio 5.5. It has been declared as problematic. The affected element is the function rve_destroy of the file src/core/rvalue.c of the component Configuration File Handler. The manipulation results in heap-based overflow. This vulnerability is cataloged as CVE-2025-12204. The attack must be initiated from a local position. Furthermore, there is an exploit available. The real existence of this vulnerability is still doubted at the moment. This attack requires manipulating config files which might not be a realistic scenario in many cases. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Kamailio 5.5. It has been classified as problematic. Affected is the function rve_destroy of the file src/core/rvalue.c of the component Configuration File Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability.

The advisory is available at shimo.im. This vulnerability is traded as CVE-2025-12204. The exploitability is told to be easy. Local access is required to approach this attack. Technical details and a public exploit are known.

The exploit is shared for download at shimo.im. It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment. The vendor was contacted early about this disclosure but did not respond in any way. This attack requires manipulating config files which might not be a realistic scenario in many cases. The vulnerability scanner Nessus provides a plugin with the ID 271821 (Linux Distros Unpatched Vulnerability : CVE-2025-12204), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (271821) and EUVD (EUVD-2025-36064). Further details are available at openwall.com. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 271821
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-12204

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/25/2025 Advisory disclosed
10/25/2025 +0 days VulDB entry created
11/04/2025 +9 days VulDB entry last update

Sourcesinfo

Advisory: shimo.im
Status: Not defined
Disputed: 🔍

CVE: CVE-2025-12204 (🔒)
GCVE (CVE): GCVE-0-2025-12204
GCVE (VulDB): GCVE-100-329874
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔒

Entryinfo

Created: 10/25/2025 13:57
Updated: 11/04/2025 00:05
Changes: 10/25/2025 13:57 (56), 10/27/2025 04:57 (30), 10/27/2025 05:50 (1), 10/29/2025 04:00 (11), 11/01/2025 19:41 (2), 11/04/2025 00:05 (4)
Complete: 🔍
Submitter: zh_vul
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #673224: Kamailio Project Kamailio SIP Server 5.5 Heap-based Buffer Overflow (by zh_vul)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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