CVE-2015-2157
LOW severity · CVSS 2.1 · Information disclosure
2.1CVSS LOW
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impactNone
Availability impactNone
Exploit probability (EPSS)1%
AV:L/AC:L/Au:N/C:P/I:N/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html ↗
Additional information
- NVD record
- http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.htmlPatch
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped-2.htmlPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151790.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151839.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151933.html
- http://lists.opensuse.org/opensuse-updates/2015-03/msg00032.html
- http://www.debian.org/security/2015/dsa-3190
- http://www.openwall.com/lists/oss-security/2015/02/28/4