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CVE-2017-16671

8.8 · HIGH

A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7.

Published Nov 9, 2017CWE-119EPSS 3.34%

Overview

CVE-2017-16671 is a high-severity vulnerability. It was published on November 9, 2017 and has a CVSS 3.0 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdownloads.digium.com/pub/security/AST-2017-010.htmlRefwww.securityfocus.com/bid/101760Refissues.asterisk.org/jira/browse/ASTERISK-27337Refsecurity.gentoo.org/glsa/201811-11Refwww.debian.org/security/2017/dsa-4076Refdownloads.digium.com/pub/security/AST-2017-010.htmlRefwww.securityfocus.com/bid/101760Refissues.asterisk.org/jira/browse/ASTERISK-27337Refsecurity.gentoo.org/glsa/201811-11Refwww.debian.org/security/2017/dsa-4076

How CyberStrike helps

Frequently asked questions

What is CVE-2017-16671?

CVE-2017-16671 is a high-severity vulnerability. It was published on November 9, 2017 and has a CVSS 3.0 base score of 8.8 (HIGH).

How severe is CVE-2017-16671?

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-16671?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-16671?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-16671 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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