Vulnerability Monitor

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CVE-2018-7284

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.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 3 products from digium, from digium, from debian organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-02-22T00:29:01.000

Last Modified

2024-11-21T04:11:56.303

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	digium	asterisk	≤ 13.19.1	Yes
Application	digium	asterisk	≤ 14.7.5	Yes
Application	digium	asterisk	≤ 15.2.1	Yes
Application	digium	certified_asterisk	13.18	Yes
Application	digium	certified_asterisk	13.18	Yes
Application	digium	certified_asterisk	≤ 13.18	Yes
Operating System	debian	debian_linux	9.0	Yes

References

http://downloads.asterisk.org/pub/security/AST-2018-004.html Patch, Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/103151 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1040416 Third Party Advisory, VDB Entry ([email protected])
https://www.debian.org/security/2018/dsa-4320 Third Party Advisory ([email protected])
https://www.exploit-db.com/exploits/44184/ Exploit, Third Party Advisory, VDB Entry ([email protected])
http://downloads.asterisk.org/pub/security/AST-2018-004.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/103151 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1040416 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2018/dsa-4320 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.exploit-db.com/exploits/44184/ Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For digium's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.