CVE-2013-4207
Medium
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.
SeverityMedium
CVSS4.3
Exploit probability—
ProductPutty
PublishedAug 19, 2013
First seenAug 19, 2013
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| putty putty | 0.45, 0.46, 0.47, 0.48, 0.49, 0.50, 0.51, 0.52, 0.53b, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.60, 0.61, 2010-06-01 | — |
| simon_tatham putty | v ≤ 0.62, 0.53 | — |
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