CVE-2018-7284

high-risk
Published 2018-02-22

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.

Do I need to act?

!
65.2% chance of exploitation in next 30 days
EPSS score — higher than 35% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
44184
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Debian Digium

References (10)

Patch http://downloads.asterisk.org/pub/security/AST-2018-004.html
Third Party Advisory http://www.securityfocus.com/bid/103151
Third Party Advisory http://www.securitytracker.com/id/1040416
Third Party Advisory https://www.debian.org/security/2018/dsa-4320
Exploit https://www.exploit-db.com/exploits/44184/
Patch http://downloads.asterisk.org/pub/security/AST-2018-004.html
Third Party Advisory http://www.securityfocus.com/bid/103151
Third Party Advisory http://www.securitytracker.com/id/1040416
Third Party Advisory https://www.debian.org/security/2018/dsa-4320
Exploit https://www.exploit-db.com/exploits/44184/
64
/ 100
high-risk
Severity 26/34 · High
Exploitability 26/34 · High
Exposure 12/34 · Low