KLA10434 Multiple vulnerabilities in PuTTY

Multiple serious vulnerabilities have been found in PuTTY. Malicious users can exploit these vulnerabilities to cause denial of service, obtain sensitive information or possibly execute arbitrary code. Below is a complete list of vulnerabilities

1. An integer overflow can be exploited remotely via a specially designed RSA key;
2. Improper work with memory can be exploited locally;
3. Buffer overflow and underflow can be exploited remotely via a specially designed DSA signature;

Original advisories

Related products

PuTTY

CVE list

CVE-2013-4852 high

CVE-2013-4207 high

CVE-2013-4208 high

CVE-2013-4206 high

Solution

Update to latest version

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

Affected Products

• PuTTY versions earlier than 0.62