Information disclosure in Putty
CVE-2013-4208
The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v2 metric
CVSS v2 base score 2.1 (Low). Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.004 (33.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Putty — versions 0.45, 0.46, 0.47
- Simon Tatham Putty — versions 0.53
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2013/08/06/11 (mailing-list)
- secunia.com/advisories/54533 (third-party-advisory)
- www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped.html
- www.debian.org/security/2013/dsa-2736 (vendor-advisory)
- lists.opensuse.org/opensuse-updates/2013-08/msg00035.html (vendor-advisory)
- secunia.com/advisories/54379 (Vendor Advisory, third-party-advisory)