CVE-2004-1440
EPSS 3.5%
Description
Multiple heap-based buffer overflows in the modpow function in PuTTY before 0.55 allow (1) remote attackers to execute arbitrary code via an SSH2 packet with a base argument that is larger than the mod argument, which causes the modpow function to write memory before the beginning of its buffer, and (2) remote malicious servers to cause a denial of service (client crash) and possibly execute arbitrary code via a large bignum during authentication.
How to fix CVE-2004-1440
To remediate CVE-2004-1440, upgrade the affected package to a fixed version below.
- Debian/putty—upgrade to 0.56-1 or later
Is CVE-2004-1440 being exploited?
Low — EPSS is 3.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.56-1