Kamailio up to 4.3.4 SEAS encode_msg.c encode_msg memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Kamailio up to 4.3.4. Affected by this issue is the function encode_msg of the file encode_msg.c of the component SEAS Module. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2016-2385. The attack may be initiated remotely. In addition, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Kamailio up to 4.3.4. This affects the function encode_msg of the file encode_msg.c of the component SEAS Module. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

The weakness was presented 04/11/2016 (Website). It is possible to read the advisory at packetstormsecurity.com. This vulnerability is uniquely identified as CVE-2016-2385 since 02/15/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 90051 (FreeBSD : kamailio -- SEAS Module Heap overflow (c428de09-ed69-11e5-92ce-002590263bf5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175691 (Debian Security Update for kamailio (DSA 3535-1)).

Upgrading to version 4.3.5 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (39638), Tenable (90051), SecurityFocus (BID 85739†) and Vulnerability Center (SBV-58250†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.3

VulDB Base Score: 9.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 90051
Nessus Name: FreeBSD : kamailio -- SEAS Module Heap overflow (c428de09-ed69-11e5-92ce-002590263bf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800891
OpenVAS Name: Kamailio SEAS module encode_msg heap buffer overflow
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kamailio 4.3.5
Patch: github.com

Timelineinfo

02/15/2016 🔍
03/03/2016 +17 days 🔍
03/19/2016 +16 days 🔍
03/21/2016 +2 days 🔍
03/21/2016 +0 days 🔍
04/11/2016 +20 days 🔍
04/11/2016 +0 days 🔍
04/12/2016 +1 days 🔍
04/17/2016 +5 days 🔍
10/09/2024 +3097 days 🔍

Sourcesinfo

Product: github.com

Advisory: 136477
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-2385 (🔍)
GCVE (CVE): GCVE-0-2016-2385
GCVE (VulDB): GCVE-100-82083

OVAL: 🔍

SecurityFocus: 85739 - Kamailio 'seas/encode_msg.c' Heap Buffer Overflow Vulnerability
Vulnerability Center: 58250 - Kamailio <4.3.5 Remote Code Execution due to Buffer Overflow in SEAS Module, Critical

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/12/2016 11:05
Updated: 10/09/2024 17:38
Changes: 04/12/2016 11:05 (70), 02/05/2019 13:05 (16), 07/13/2022 15:02 (4), 09/21/2024 22:25 (14), 10/09/2024 17:38 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!