CVE-2017-16872 : Vulnerability Insights and Analysis
Discover the Teluu pjproject vulnerability in PJSIP versions before 2.7.1. Learn about the impact, affected systems, exploitation risks, and mitigation steps for CVE-2017-16872.
A vulnerability was found in the Teluu pjproject (pjlib and pjlib-util) in the version prior to 2.7.1 of PJSIP. The issue was related to the parsing of numeric header fields in a SIP message, potentially leading to overflowing and buffer overrun, which could be exploited by using carefully crafted invalid values.
Understanding CVE-2017-16872
This CVE entry describes a vulnerability in the Teluu pjproject affecting versions before 2.7.1 of PJSIP.
What is CVE-2017-16872?
The vulnerability in Teluu pjproject (pjlib and pjlib-util) in PJSIP versions prior to 2.7.1 was due to the mishandling of numeric header fields in SIP messages, which could result in overflowing and buffer overrun when processing invalid values.
The Impact of CVE-2017-16872
The vulnerability had the potential to allow attackers to exploit the system by using carefully crafted invalid values, leading to unintended values being captured or buffer overruns.
Technical Details of CVE-2017-16872
This section provides more technical insights into the CVE-2017-16872 vulnerability.
Vulnerability Description
The issue resided in the parsing of numeric header fields in SIP messages, such as cseq, ttl, port, etc., which could lead to overflowing and buffer overrun.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Versions Affected: All versions prior to 2.7.1 of PJSIP
Exploitation Mechanism
The vulnerability could be exploited by using meticulously crafted invalid values in SIP messages, causing overflowing and potential buffer overruns.
Mitigation and Prevention
To address CVE-2017-16872, follow these mitigation and prevention steps:
Immediate Steps to Take
- Update to version 2.7.1 of PJSIP or later to mitigate the vulnerability.
- Monitor vendor advisories and apply patches promptly.
Long-Term Security Practices
- Regularly update and patch software to prevent known vulnerabilities.
- Implement network security measures to detect and block malicious SIP messages.
Patching and Updates
- Apply patches provided by the vendor to fix the vulnerability.