CVE-2000-0300 in pcAnywhere
Summary
by MITRE
The default encryption method of PcAnywhere 9.x uses weak encryption, which allows remote attackers to sniff and decrypt PcAnywhere or NT domain accounts.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 04/08/2025
The vulnerability described in CVE-2000-0300 represents a critical weakness in the default encryption implementation of Symantec PcAnywhere version 9.x, a widely used remote desktop and system administration tool. This flaw stems from the use of weak cryptographic algorithms that fail to provide adequate security protection for sensitive communications. The vulnerability specifically affects the default encryption method employed by the software, which was designed to protect remote desktop sessions and authentication credentials. Attackers capable of intercepting network traffic between PcAnywhere clients and servers could exploit this weakness to capture and decrypt sensitive information transmitted during remote sessions.
The technical implementation of this vulnerability involves the use of outdated and insufficient cryptographic primitives that do not meet modern security standards. The weak encryption algorithm allows remote attackers to perform network sniffing operations and subsequently decrypt the captured communications to obtain PcAnywhere session data and potentially NT domain account credentials. This weakness directly violates fundamental security principles outlined in the Common Weakness Enumeration framework under CWE-310, which categorizes cryptographic weaknesses and improper cryptographic key management as critical vulnerabilities. The vulnerability's impact extends beyond simple session interception to include potential credential compromise and unauthorized access to corporate networks through domain accounts.
The operational impact of CVE-2000-0300 is severe and far-reaching, particularly in enterprise environments where PcAnywhere was commonly deployed for remote system administration. Attackers exploiting this vulnerability could gain unauthorized access to systems, escalate privileges through domain credential compromise, and potentially move laterally within networks. This weakness aligns with tactics described in the MITRE ATT&CK framework under the T1071.004 technique for application layer protocol: remote desktop protocol, where adversaries leverage weak encryption to establish unauthorized remote access. The vulnerability creates a persistent security risk that remains exploitable even after initial compromise, as the weak encryption persists in default configurations.
Mitigation strategies for this vulnerability require immediate action to address the underlying cryptographic weakness in PcAnywhere 9.x implementations. Organizations should implement network segmentation and monitoring to detect unusual traffic patterns that may indicate exploitation attempts. The most effective remediation involves upgrading to newer versions of PcAnywhere that utilize stronger encryption algorithms or migrating to alternative remote access solutions with robust cryptographic implementations. Security professionals should also consider implementing additional authentication mechanisms such as two-factor authentication and network access control measures to reduce the attack surface. The vulnerability demonstrates the importance of cryptographic agility and proper key management practices as outlined in NIST Special Publication 800-57, which emphasizes the need for regularly updating cryptographic implementations to address known weaknesses and maintain security effectiveness.