CVE-2013-4207

MediumCVSS 4.3/10Last modified Jun 16, 2026

Description

Buffer overflow in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) via an invalid DSA signature that is not properly handled during computation of a modular inverse and triggers the overflow during a division by zero by the bignum functionality, a different vulnerability than CVE-2013-4206.

Metrics

CVSS 2.0 4.3/10AV:N/AC:M/Au:N/C:N/I:N/A:P

Weakness enumeration

CWE-119

Affected software

No affected versions have been published.

Timeline

Published: Aug 19, 2013
Last modified: Jun 16, 2026
NVD status: Modified

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