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6.8
MEDIUM CVSS 2.0
CVE-2013-4206
PuTTY SSH Denial of Service with Memory Corruption
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.

INFO

Published Date :

Aug. 19, 2013, 11:55 p.m.

Last Modified :

April 11, 2025, 12:51 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2013-4206 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Putty putty
1 Simon_tatham putty
: Total Affected Vendor : 2 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
Solution
A vulnerability in PuTTY, FileZilla, and WinSCP allows for a denial of service and potential memory corruption; upgrading to the latest versions of the affected software is recommended.
  • Upgrade to PuTTY version 0.63 or later.
  • Upgrade FileZilla Client to version 3.7.3 or later.
  • Upgrade WinSCP to version 5.1.7 / 5.2.4 beta or later.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2013-4206.

URL 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
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
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2013-4206 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2013-4206 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2013-4206 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2013-4206 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html
    Added Reference http://secunia.com/advisories/54379
    Added Reference http://secunia.com/advisories/54533
    Added Reference http://svn.tartarus.org/sgt/putty/sshbn.c?sortby=date&r1=9977&r2=9976&pathrev=9977
    Added Reference http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-modmul.html
    Added Reference http://www.debian.org/security/2013/dsa-2736
    Added Reference http://www.openwall.com/lists/oss-security/2013/08/06/11
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    Aug. 06, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:2010-06-01:r8967:*:*:development_snapshot:*:*:* OR *cpe:2.3:a:putty:putty:2010-06-01:r8967:*:*:development_snapshot:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.61:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.61:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.60:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.60:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.59:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.59:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.58:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.58:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.57:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.57:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.56:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.56:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.55:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.55:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.54:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.54:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.53b:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.53b:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.52:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.52:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.51:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.51:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.50:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.50:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.49:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.49:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.48:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.48:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.47:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.47:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.46:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.46:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:simon_tatham:putty:0.45:*:*:*:*:*:*:* OR *cpe:2.3:a:putty:putty:0.45:*:*:*:*:*:*:*
  • Modified Analysis by [email protected]

    Sep. 02, 2015

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:simon_tatham:putty:0.62:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:simon_tatham:putty:0.61:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.60:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.59:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.58:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.57:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.56:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.55:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.54:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.53b:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.53:b:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.53:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.52:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.51:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.50:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.49:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.48:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.47:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.46:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.45:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:2010-06-01:r8967:*:*:development_snapshot:*:*:* Configuration 1 OR *cpe:2.3:a:simon_tatham:putty:0.62:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:simon_tatham:putty:0.61:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.60:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.59:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.58:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.57:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.56:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.55:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.54:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.53b:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.53:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.52:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.51:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.50:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.49:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.48:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.47:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.46:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:0.45:*:*:*:*:*:*:* *cpe:2.3:a:simon_tatham:putty:2010-06-01:r8967:*:*:development_snapshot:*:*:*
  • Initial Analysis by [email protected]

    Aug. 20, 2013

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 6.8
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.14 }} -0.86%

score

0.76433

percentile