Denial of service in Digium Asterisk
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2017-17850 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Asterisk Open Source Server applications / Conferencing, Collaboration and VoIP solutions |
| Vendor | Digium (Linux Support Services) |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Improper input validation
EUVDB-ID: #VU9736
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-17850
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
Description
The vulnerability allows a remote authenticated attacker to cause DoS condition on the target system.
The vulnerability exists due to an error when processing malicious SIP data. A remote attacker can send specially crafted SIP data without a contact header, trigger an error in the PJSIP channel driver and cause the service to crash.
Successful exploitation of the vulnerability results in denial of service.
The vulnerability is addressed in the following version.
Asterisk Open Source: 13.0.0 - 15.1.4
External linkshttp://downloads.asterisk.org/pub/security/AST-2017-014.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
