CVE-2013-4206 in PuTTY
Summary
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.
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Reservation
06/12/2013
Disclosure
08/19/2013
Status
Confirmed
Entries
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnerability | CWE | Exp | Cou | CVE |
|---|---|---|---|---|---|
| 9945 | Simon Tatham PuTTY Modular Multiplication modmul memory corruption | 119 | Not defined | Official fix | CVE-2013-4206 |