CVE-2018-12228 Denial of service in n/a
A remote attacker can cause a denial of service in Asterisk by triggering an infinite loop via abrupt disconnection or crafted messages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-12228?
CVE-2018-12228 is a medium-severity denial of service vulnerability in n/a, published on 12 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in Asterisk Open Source 15.x before 15.4.1. When connected to Asterisk via TCP/TLS, if the client abruptly disconnects, or sends a specially crafted message, then Asterisk gets caught in an infinite loop while trying to read the data stream. This renders the system unusable.
Weakness: CWE-835
Which versions are affected by CVE-2018-12228?
It affects 1 product.
Products include Sangoma Asterisk.
How do I fix CVE-2018-12228?
No fix has been published for CVE-2018-12228 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2018-12228 being exploited?
There is no known exploitation of CVE-2018-12228 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2024-57520 Path traversal in n/a
- CVE-2025-47779 Using malformed From header can forge identity with ";" or NULL in name portion
- CVE-2025-57767 Asterisk can crash from a specifically malformed Authorization header in an incoming SIP request
- CVE-2022-37325 Memory corruption in n/a
- CVE-2025-1131 Asterisk Unsafe Shell Sourcing in safe_asterisk Leads to Local Privilege Escalation
Sources
Also known as GHSA-wcxf-gxv3-7xch.