CVE-2022-39309 : Exploit Details and Defense Strategies
GoCD versions prior to 21.1.0 are vulnerable to a key leakage flaw allowing attackers to decrypt secrets intended for other agents. Learn about the impact, mitigation steps, and prevention techniques.
GoCD server secret encryption/decryption key leaked to agents during material serialization.
Understanding CVE-2022-39309
GoCD versions prior to 21.1.0 are susceptible to leaking the symmetric key used to encrypt/decrypt secure variables/secrets in GoCD configuration to authenticated agents. This could potentially allow attackers to decrypt secrets intended for other agents/environments if they gain access to encrypted configuration values.
What is CVE-2022-39309?
CVE-2022-39309 discloses a vulnerability in GoCD where the encryption/decryption key for secure variables/secrets in the configuration is leaked to authenticated agents, posing a risk of exposing sensitive information.
The Impact of CVE-2022-39309
The impact of this vulnerability is that a compromised agent could potentially expose the encryption key from memory, granting unauthorized access to decrypt sensitive information meant for other agents/environments.
Technical Details of CVE-2022-39309
Vulnerability Description
The issue arises from GoCD versions prior to 21.1.0 leaking the symmetric key used in encryption/decryption of secure variables/secrets, making it accessible to authenticated agents.
Affected Systems and Versions
GoCD versions earlier than 21.1.0 are affected by this vulnerability, where the leak of the secret key could compromise the security of encrypted configuration values.
Exploitation Mechanism
A malicious agent could exploit this vulnerability by accessing the leaked encryption key from memory and potentially decrypting sensitive information intended for other agents/environments.
Mitigation and Prevention
Immediate Steps to Take
Users are strongly recommended to update their GoCD server to version 21.1.0 or later, as this version contains the fix for the vulnerability. Additionally, it is advised to review and update any secrets/secure variables that may have been exposed.
Long-Term Security Practices
To enhance security, organizations should implement a secure key management process, regularly review access controls, and conduct security audits to detect and mitigate similar vulnerabilities.
Patching and Updates
Regularly monitor for security updates from GoCD and promptly apply patches to ensure that known vulnerabilities are addressed and the system remains secure.