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CVE-2004-1440

UnknownEPSS 4.11%

Last modified

CVE-2004-1440 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.11% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
4.11%

89.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
PuttyPutty0.48
PuttyPutty0.49
PuttyPutty0.50
PuttyPutty0.51
PuttyPutty0.52
PuttyPutty0.53
PuttyPutty0.53b
PuttyPutty0.54

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2004-1440?
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 severe is CVE-2004-1440?
Severity scoring for CVE-2004-1440 is pending analysis. The EPSS model estimates a 4.11% probability of exploitation in the next 30 days.
How do I fix CVE-2004-1440?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2004-1440?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST