The (1) ssh2_load_userkey and (2) ssh2_save_userkey functions in PuTTY 0.51 through 0.63 do not properly wipe SSH-2 private keys from memory, which allows local users to obtain sensitive information by reading the memory.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2157
Reference (s):
- BID:72825
- URL: http://www.securityfocus.com/bid/72825
- http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped-2.html
- DEBIAN:DSA-3190