VDB-9902 · CVE-2013-4208 · BID 61644

Simon Tatham PuTTY up to 0.62 information disclosure

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9	$0-$5k	0.00

A vulnerability, which was classified as problematic, has been found in Simon Tatham PuTTY up to 0.62 (Connectivity Software). Affected by this issue is an unknown code. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.

The weakness was disclosed 08/06/2013 with Coverity Scan Project as confirmed mailinglist post (oss-sec). The advisory is available at seclists.org. The public release has been coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2013-4208 since 06/12/2013. The exploitation is known to be difficult. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 69313 (Debian DSA-2736-1 : putty - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166403 (OpenSuSE Security Update for Filezilla (openSUSE-SU-2013:1347-1)).

Upgrading to version 0.63 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (69313). The entries 9860, 9901 and 9945 are pretty similar.

Productinfo

Type

Connectivity Software

Vendor

Simon Tatham

Name

PuTTY

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 69313
Nessus Name: Debian DSA-2736-1 : putty - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 892736
OpenVAS Name: Debian Security Advisory DSA 2736-1 (putty - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: PuTTY 0.63

Timelineinfo

06/12/2013 🔍
08/05/2013 +54 days 🔍
08/06/2013 +1 days 🔍
08/06/2013 +0 days 🔍
08/06/2013 +0 days 🔍
08/06/2013 +0 days 🔍
08/12/2013 +6 days 🔍
08/12/2013 +0 days 🔍
08/19/2013 +7 days 🔍
05/21/2021 +2832 days 🔍

Sourcesinfo

Advisory: seclists.org
Organization: Coverity Scan Project
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-4208 (🔍)
OVAL: 🔍

Vulnerability Center: 40974 - PuTTY 0.52 - 0.62 Improper Private Keys Handling Allows Remote Information Disclosure Vulnerability, Medium
SecurityFocus: 61644 - PuTTY Private Key 'putty/sshdss.c' Multiple Information Disclosure Vulnerabilities
Secunia: 54354 - PuTTY Multiple Integer Overflow Vulnerabilities, Moderately Critical
OSVDB: 96081

See also: 🔍

Entryinfo

Created: 08/12/2013 15:20
Updated: 05/21/2021 10:13
Changes: 08/12/2013 15:20 (78), 05/08/2017 09:04 (4), 05/21/2021 10:13 (3)
Complete: 🔍
Committer: