Description
Integer overflow in PuTTY 0.62 and earlier, WinSCP before 5.1.6, and other products that use PuTTY allows remote SSH servers to cause a denial of service (crash) and possibly execute arbitrary code in certain applications that use PuTTY via a negative size value in an RSA key signature during the SSH handshake, which triggers a heap-based buffer overflow.
Metrics
CVSS 2.0 6.8/10
AV:N/AC:M/Au:N/C:P/I:P/A:PWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=718779
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00041.html
- http://secunia.com/advisories/54379Vendor Advisory
- http://secunia.com/advisories/54517
- http://secunia.com/advisories/54533
- http://svn.tartarus.org/sgt?view=revision&sortby=date&revision=9896
- http://winscp.net/tracker/show_bug.cgi?id=1017
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-signature-stringlen.htmlVendor Advisory
- http://www.debian.org/security/2013/dsa-2736
- http://www.search-lab.hu/advisories/secadv-20130722
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=718779
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00041.html
- http://secunia.com/advisories/54379Vendor Advisory
- http://secunia.com/advisories/54517
- http://secunia.com/advisories/54533
- http://svn.tartarus.org/sgt?view=revision&sortby=date&revision=9896
- http://winscp.net/tracker/show_bug.cgi?id=1017
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-signature-stringlen.htmlVendor Advisory
- http://www.debian.org/security/2013/dsa-2736
- http://www.search-lab.hu/advisories/secadv-20130722
Timeline
- Published
- Aug 19, 2013
- Last modified
- Jun 16, 2026
- NVD status
- Modified