CVE-2013-4206

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.

CVSS v2.0 6.8 MEDIUM

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html
http://secunia.com/advisories/54379	Vendor Advisory
http://secunia.com/advisories/54533
http://svn.tartarus.org/sgt/putty/sshbn.c?sortby=date&r1=9977&r2=9976&pathrev=9977	Patch
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-modmul.html	Vendor Advisory
http://www.debian.org/security/2013/dsa-2736
http://www.openwall.com/lists/oss-security/2013/08/06/11

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:putty:putty:0.45:::::::*
	cpe:2.3:a:putty:putty:0.46:::::::*
	cpe:2.3:a:putty:putty:0.47:::::::*
	cpe:2.3:a:putty:putty:0.48:::::::*
	cpe:2.3:a:putty:putty:0.49:::::::*
	cpe:2.3:a:putty:putty:0.50:::::::*
	cpe:2.3:a:putty:putty:0.51:::::::*
	cpe:2.3:a:putty:putty:0.52:::::::*
	cpe:2.3:a:putty:putty:0.53b:::::::*
	cpe:2.3:a:putty:putty:0.54:::::::*
	cpe:2.3:a:putty:putty:0.55:::::::*
	cpe:2.3:a:putty:putty:0.56:::::::*
	cpe:2.3:a:putty:putty:0.57:::::::*
	cpe:2.3:a:putty:putty:0.58:::::::*
	cpe:2.3:a:putty:putty:0.59:::::::*
	cpe:2.3:a:putty:putty:0.60:::::::*
	cpe:2.3:a:putty:putty:0.61:::::::*
	cpe:2.3:a:putty:putty:2010-06-01:r8967:::development_snapshot:::*
	cpe:2.3:a:simon_tatham:putty::::::::
	cpe:2.3:a:simon_tatham:putty:0.53:::::::*

History

No history.

Information

Published : 2013-08-19 23:55

Updated : 2021-08-06 16:58

NVD link : CVE-2013-4206

Mitre link : CVE-2013-4206

CVE.ORG link : CVE-2013-4206

JSON object : View

Products Affected

simon_tatham

putty

putty

putty

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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