An issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. A memory leak occurs when an Asterisk pjsip session object is created and that call gets rejected before the session itself is fully established. When this happens the session object never gets destroyed. Eventually Asterisk can run out of memory and crash.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.9, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 2 products from digium, from digium organizations running these solutions should prioritize assessment and patching.
First disclosed in 2017, 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.
2017-11-09T00:29:00.520
2025-04-20T01:37:25.860
Deferred
CVSSv3.0: 5.9 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | digium | asterisk | < 13.18.1 | Yes |
| Application | digium | asterisk | < 14.7.1 | Yes |
| Application | digium | asterisk | < 15.1.1 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
| Application | digium | certified_asterisk | 13.13.0 | Yes |
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.