UBUNTU-CVE-2018-7284

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UBUNTU-CVE-2018-7284

Summary:

Details: A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. When processing a SUBSCRIBE request, the res_pjsip_pubsub module stores the accepted formats present in the Accept headers of the request. This code did not limit the number of headers it processed, despite having a fixed limit of 32. If more than 32 Accept headers were present, the code would write outside of its memory and cause a crash.

References: https://ubuntu.com/security/CVE-2018-7284, http://downloads.asterisk.org/pub/security/AST-2018-004.html, https://www.cve.org/CVERecord?id=CVE-2018-7284