CVE-2017-16872

Name: CVE-2017-16872
Creator: NVD / NIST
Published: 2017-11-17T09:29:00.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.40%

Last modified Jun 17, 2026

CVE-2017-16872 is a vulnerability of currently unknown severity. An issue was discovered in Teluu pjproject (pjlib and pjlib-util) in PJSIP before 2.7.1. Parsing the numeric header fields in a SIP message (like cseq, ttl, port, etc.) all had the potential to overflow, either causing unintended values to be captured or, if the values were subsequently converted back to strings, a buffer overrun. EPSS estimates a 3.40% chance of exploitation in the next 30 days.

Description

An issue was discovered in Teluu pjproject (pjlib and pjlib-util) in PJSIP before 2.7.1. Parsing the numeric header fields in a SIP message (like cseq, ttl, port, etc.) all had the potential to overflow, either causing unintended values to be captured or, if the values were subsequently converted back to strings, a buffer overrun. This will lead to a potential exploit using carefully crafted invalid values.

Metrics

EPSS Probability

3.40%

87.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Teluu	Pjsip	< 2.7.1
Debian	Debian Linux	9.0

References

https://trac.pjsip.org/repos/milestone/release-2.7.1Release Notes, Vendor Advisory
https://trac.pjsip.org/repos/ticket/2056Vendor Advisory
https://www.debian.org/security/2018/dsa-4170Third Party Advisory
https://trac.pjsip.org/repos/milestone/release-2.7.1Release Notes, Vendor Advisory
https://trac.pjsip.org/repos/ticket/2056Vendor Advisory
https://www.debian.org/security/2018/dsa-4170Third Party Advisory

Timeline

Published: Nov 17, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-16872?

How severe is CVE-2017-16872?

Severity scoring for CVE-2017-16872 is pending analysis. The EPSS model estimates a 3.40% probability of exploitation in the next 30 days.

How do I fix CVE-2017-16872?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-16872?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST