CVE-2011-0495
asterisk - buffer overflow
EPSS 0.57%
Description
Stack-based buffer overflow in the ast_uri_encode function in main/utils.c in Asterisk Open Source before 1.4.38.1, 1.4.39.1, 1.6.1.21, 1.6.2.15.1, 1.6.2.16.1, 1.8.1.2, 1.8.2.; and Business Edition before C.3.6.2; when running in pedantic mode allows remote authenticated users to execute arbitrary code via crafted caller ID data in vectors involving the (1) SIP channel driver, (2) URIENCODE dialplan function, or (3) AGI dialplan function.
How to fix CVE-2011-0495
To remediate CVE-2011-0495, upgrade the affected package to a fixed version below.
- Debian/asterisk—upgrade to 1:1.6.2.9-2+squeeze1 or later
- —upgrade to 1:1.6.2.9-2+squeeze1 or later
Is CVE-2011-0495 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1:1.6.2.9-2+squeeze1
- from 0, < 1:1.6.2.9-2+squeeze1