Bug 1548130 (CVE-2018-7284) - CVE-2018-7284 asterisk: memory corruption in SUBSCRIBE message with a large Accept value
Summary: CVE-2018-7284 asterisk: memory corruption in SUBSCRIBE message with a large A...
Alias: CVE-2018-7284
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1548131 1548132
TreeView+ depends on / blocked
Reported: 2018-02-22 19:53 UTC by Laura Pardo
Modified: 2019-09-29 14:33 UTC (History)
4 users (show)

Fixed In Version: asterisk 13.19.2, asterix 14.7.6, asterix 15.2.2
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Clone Of:
Last Closed: 2019-06-08 03:40:58 UTC

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Description Laura Pardo 2018-02-22 19:53:13 UTC
A flaw was discovered in Asterisk 13.x, 14.x, 15.x and 13.18. 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.


http://downloads.asterisk.org/pub/security/AST-2018-004-13.diff [Asterisk 13]
http://downloads.asterisk.org/pub/security/AST-2018-004-14.diff [Asterisk 14]
http://downloads.asterisk.org/pub/security/AST-2018-004-15.diff [Asterisk 15]
http://downloads.asterisk.org/pub/security/AST-2018-004-13.18.diff [Certified Asterisk 13.18]

Comment 1 Laura Pardo 2018-02-22 19:53:40 UTC
Created asterisk tracking bugs for this issue:

Affects: epel-6 [bug 1548131]
Affects: fedora-all [bug 1548132]

Comment 2 Product Security DevOps Team 2019-06-08 03:40:58 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

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