CVE-2017-9372

high-risk

Published 2017-06-02

PJSIP, as used in Asterisk Open Source 13.x before 13.15.1 and 14.x before 14.4.1, Certified Asterisk 13.13 before 13.13-cert4, and other products, allows remote attackers to cause a denial of service (buffer overflow and application crash) via a SIP packet with a crafted CSeq header in conjunction with a Via header that lacks a branch parameter.

Do I need to act?

3.7% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (20)

Open Source

Affected Vendors

Digium

References (10)

Third Party Advisory http://downloads.asterisk.org/pub/security/AST-2017-002.txt

http://www.debian.org/security/2017/dsa-3933

Third Party Advisory http://www.securityfocus.com/bid/98572

http://www.securitytracker.com/id/1038529

Mailing List https://bugs.debian.org/863901

Third Party Advisory http://downloads.asterisk.org/pub/security/AST-2017-002.txt

http://www.debian.org/security/2017/dsa-3933

Third Party Advisory http://www.securityfocus.com/bid/98572

http://www.securitytracker.com/id/1038529

Mailing List https://bugs.debian.org/863901

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high-risk

Severity 26/34 · High

Exploitability 7/34 · Low

Exposure 26/34 · High