CVE-2009-4055 Denial of service in n/a

What is CVE-2009-4055?

CVE-2009-4055 is a medium-severity denial of service vulnerability in Digium Asterisk, published on 2 Dec 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

rtp.c in Asterisk Open Source 1.2.x before 1.2.37, 1.4.x before 1.4.27.1, 1.6.0.x before 1.6.0.19, and 1.6.1.x before 1.6.1.11; Business Edition B.x.x before B.2.5.13, C.2.x.x before C.2.4.6, and C.3.x.x before C.3.2.3; and s800i 1.3.x before 1.3.0.6 allows remote attackers to cause a denial of service (daemon crash) via an RTP comfort noise payload with a long data length.

Which versions are affected by CVE-2009-4055?

It affects 2 products.

Products include Digium Asterisk, Digium S800i.

How do I fix CVE-2009-4055?

Upgrade to a fixed version.

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-2009-4055 being exploited?

There is no known exploitation of CVE-2009-4055 in the wild and no public exploit code.

Other vulnerabilities in Digium Asterisk

• CVE-2017-14100 Command injection in n/a Critical 9.8
• CVE-2014-8418 Privilege escalation in n/a Critical 9.0
• CVE-2011-1599 Missing authorization in n/a Critical 9.0
• CVE-2017-16671 Memory corruption in n/a High 8.8
• CVE-2017-7617 Memory corruption in n/a High 8.8

All Digium Asterisk vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2009-4055, GHSA-fgjv-2339-jv2p.