CVE-2013-4206 | Date: (C)2013-08-20 (M)2023-12-22 |
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.
CVSS Score and Metrics +CVSS Score and Metrics -CVSS V2 Severity: |
CVSS Score : 6.8 |
Exploit Score: 8.6 |
Impact Score: 6.4 |
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CVSS V2 Metrics: |
Access Vector: NETWORK |
Access Complexity: MEDIUM |
Authentication: NONE |
Confidentiality: PARTIAL |
Integrity: PARTIAL |
Availability: PARTIAL |
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