CVE-2011-4528
unbound - several
EPSS 2.9%
Description
Unbound before 1.4.13p2 attempts to free unallocated memory during processing of duplicate CNAME records in a signed zone, which allows remote DNS servers to cause a denial of service (daemon crash) via a crafted response.
How to fix CVE-2011-4528
To remediate CVE-2011-4528, upgrade the affected package to a fixed version below.
- Debian/unbound—upgrade to 1.4.14-1 or later
- Debian/unbound—upgrade to 1.4.6-1~lenny2 or later
Is CVE-2011-4528 being exploited?
Low — EPSS is 2.9%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.4.14-1
- from 0, < 1.4.6-1~lenny2