PuTTY 0.59 through 0.61 does not clear sensitive process memory when managing user replies that occur during keyboard-interactive authentication, which might allow local users to read login passwords by obtaining access to the process' memory.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://seclists.org/oss-sec/2011/q4/500 | mailing list |
| http://seclists.org/oss-sec/2011/q4/499 | mailing list |
| http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/password-not-wiped.html | vendor advisory |