CVE-2013-4852

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.

Score

CVSS 2.0 6.8 Medium

Status

Modified - cve@mitre.org

Published

2013-08-19

Last modified

2024-08-06

Weaknesses

CWE-189

Affected products

• Debian Linux (Debian)
• Opensuse (Opensuse)
• Putty (Putty)
• Putty (Simon Tatham)
• Winscp (Winscp)

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/54379
• 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.html
• http://www.debian.org/security/2013/dsa-2736
• http://www.search-lab.hu/advisories/secadv-20130722