CVE-2004-1440 - CVE House
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Status published High CVE-2004-1440

Multiple heap-based buffer overflows in the modpow function in PuTTY...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

putty
Vulnerable Versions:
0.48, 0.49, 0.50, 0.51, 0.52, 0.53, 0.53b, 0.54

Timeline

Official Publish: February 13th, 2005
Last Modified: August 8th, 2024
Added to House: July 18th, 2026

CVSS Vectors

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.