Heap-based buffer underflow in the modmul function in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) and possibly trigger memory corruption or code execution via a crafted DSA signature, which is not properly handled when performing certain bit-shifting operations during modular multiplication.
Published 2013-08-19 23:55:09
Updated 2021-08-06 16:58:10
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: OverflowMemory CorruptionDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2013-4206

1.48%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2013-4206

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.8
MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:P
8.6
6.4
NIST

CWE ids for CVE-2013-4206

References for CVE-2013-4206

Products affected by CVE-2013-4206

This web site uses cookies for managing your session, storing preferences, website analytics and additional purposes described in our privacy policy.
By using this web site you are agreeing to CVEdetails.com terms of use!