What’s Vulnerable › Vulnerabilities

CVE-2017-16875

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-11-17 · updated 2026-06-17

Description

An issue was discovered in Teluu pjproject (pjlib and pjlib-util) in PJSIP before 2.7.1. The ioqueue component may issue a double key unregistration after an attacker initiates a socket connection with specific settings and sequences. Such double key unregistration will trigger an integer overflow, which may cause ioqueue backends to reject future key registrations.

Affected products

• teluu pjsip: before 2.7.1 — fixed in 2.7.1

How to fix

Upgrade to a fixed version: teluu pjsip 2.7.1. Check the vendor advisory for mitigations.

References

• https://trac.pjsip.org/repos/milestone/release-2.7.1
• https://trac.pjsip.org/repos/ticket/2055
• https://www.debian.org/security/2018/dsa-4170
• https://trac.pjsip.org/repos/milestone/release-2.7.1
• https://trac.pjsip.org/repos/ticket/2055
• https://www.debian.org/security/2018/dsa-4170

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