Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2013-4207

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.

Published

2013-08-19T23:55:08.767

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-119
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application putty putty 0.45 Yes
Application putty putty 0.46 Yes
Application putty putty 0.47 Yes
Application putty putty 0.48 Yes
Application putty putty 0.49 Yes
Application putty putty 0.50 Yes
Application putty putty 0.51 Yes
Application putty putty 0.52 Yes
Application putty putty 0.53b Yes
Application putty putty 0.54 Yes
Application putty putty 0.55 Yes
Application putty putty 0.56 Yes
Application putty putty 0.57 Yes
Application putty putty 0.58 Yes
Application putty putty 0.59 Yes
Application putty putty 0.60 Yes
Application putty putty 0.61 Yes
Application putty putty 2010-06-01 Yes
Application simon_tatham putty ≤ 0.62 Yes
Application simon_tatham putty 0.53 Yes
References