CVE - CVE-2013-4206

CVE-ID
CVE-2013-4206	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Heap-based buffer underflow in the modmul function in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) and possibly trigger memory corruption or code execution via a crafted DSA signature, which is not properly handled when performing certain bit-shifting operations during modular multiplication.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:http://svn.tartarus.org/sgt/putty/sshbn.c?sortby=date&r1=9977&r2=9976&pathrev=9977 CONFIRM:http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-modmul.html DEBIAN:DSA-2736 URL:http://www.debian.org/security/2013/dsa-2736 MLIST:[oss-security] 20130806 CVE request: three additional flaws fixed in putty 0.63 URL:http://www.openwall.com/lists/oss-security/2013/08/06/11 SECUNIA:54379 URL:http://secunia.com/advisories/54379 SECUNIA:54533 URL:http://secunia.com/advisories/54533 SUSE:openSUSE-SU-2013:1347 URL:http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html
Assigning CNA
Red Hat, Inc.
Date Record Created
20130612	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20130612)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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