CWE
119
Advisory Published
Updated

CVE-2013-4206: Buffer Overflow

First published: Mon Aug 19 2013(Updated: )

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.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Putty Putty=0.45
Putty Putty=0.46
Putty Putty=0.47
Putty Putty=0.48
Putty Putty=0.49
Putty Putty=0.50
Putty Putty=0.51
Putty Putty=0.52
Putty Putty=0.53b
Putty Putty=0.54
Putty Putty=0.55
Putty Putty=0.56
Putty Putty=0.57
Putty Putty=0.58
Putty Putty=0.59
Putty Putty=0.60
Putty Putty=0.61
Putty Putty=2010-06-01-r8967
Simon Tatham Putty<=0.62
Simon Tatham Putty=0.53

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