CVE-2004-1440: Buffer Overflow
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.
Affected Software
Remediation
Patch Available
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2004-1440?
The severity of CVE-2004-1440 is high due to the potential for remote code execution.
How do I fix CVE-2004-1440?
To fix CVE-2004-1440, update PuTTY to version 0.55 or later.
Which versions of PuTTY are affected by CVE-2004-1440?
CVE-2004-1440 affects PuTTY versions 0.48 through 0.54.
What type of vulnerability is CVE-2004-1440?
CVE-2004-1440 is classified as a heap-based buffer overflow vulnerability.
Can CVE-2004-1440 be exploited remotely?
Yes, CVE-2004-1440 can be exploited remotely via specially crafted SSH2 packets.