Out-of-Bounds The advisory has been revoked - it doesn't affect any version of package asterisk (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1904-ASTERISK-645918
- published22 Feb 2018
- disclosed22 Feb 2018
Introduced: 22 Feb 2018
CVE-2018-7284 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:19.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream asterisk package and not the asterisk package as distributed by Ubuntu.
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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-7284
- http://downloads.asterisk.org/pub/security/AST-2018-004.html
- https://www.debian.org/security/2018/dsa-4320
- https://security-tracker.debian.org/tracker/CVE-2018-7284
- https://www.exploit-db.com/exploits/44184/
- http://www.securityfocus.com/bid/103151
- http://www.securitytracker.com/id/1040416
- https://www.exploit-db.com/exploits/44184