CVE-2013-4852

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.

Category

6.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.75% Top 20%
Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory secunia.com Vendor Advisory org.uk
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/54533 third party advisory
http://secunia.com/advisories/54517 third party advisory
http://winscp.net/tracker/show_bug.cgi?id=1017
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=718779
http://www.search-lab.hu/advisories/secadv-20130722
http://www.debian.org/security/2013/dsa-2736 vendor advisory
http://svn.tartarus.org/sgt?view=revision&sortby=date&revision=9896
http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html vendor advisory
http://secunia.com/advisories/54379 third party advisory vendor advisory
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-signature-stringlen.html vendor advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00041.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2013-4852?
CVE-2013-4852 has been scored as a medium severity vulnerability.
How to fix CVE-2013-4852?
To fix CVE-2013-4852, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-4852 being actively exploited in the wild?
It is possible that CVE-2013-4852 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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