CVE-2017-1000385 : What You Need to Know
Learn about CVE-2017-1000385, a vulnerability in the Erlang otp TLS server allowing attackers to decrypt content or forge signatures using the server's private key. Find mitigation steps and patching details here.
Different TLS alerts are provided by the Erlang otp TLS server in response to various error types found in the RSA PKCS #1 1.5 padding. An attacker can exploit this vulnerability to decrypt content or forge signatures using the server's private key. This vulnerability is a variant of the Bleichenbacher attack.
Understanding CVE-2017-1000385
This CVE involves a vulnerability in the Erlang otp TLS server that allows attackers to decrypt content or forge signatures using the server's private key.
What is CVE-2017-1000385?
The Erlang otp TLS server responds with different TLS alerts to various error types in the RSA PKCS #1 1.5 padding, enabling attackers to exploit the server's private key for decryption or signature forgery.
The Impact of CVE-2017-1000385
- Attackers can decrypt content or forge signatures using the server's private key.
- This vulnerability is a variant of the Bleichenbacher attack.
Technical Details of CVE-2017-1000385
This section provides detailed technical information about the CVE.
Vulnerability Description
The Erlang otp TLS server responds with different TLS alerts to different error types in the RSA PKCS #1 1.5 padding, allowing attackers to decrypt content or sign messages with the server's private key.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Versions: n/a
Exploitation Mechanism
- Attackers exploit the TLS server's response to error types in RSA PKCS #1 1.5 padding to decrypt content or forge signatures using the server's private key.
Mitigation and Prevention
Protecting systems from CVE-2017-1000385 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches provided by the vendor promptly.
- Monitor for any unauthorized decryption or signature forgery activities.
Long-Term Security Practices
- Implement strong encryption protocols and key management practices.
- Regularly update and patch systems to prevent vulnerabilities.
- Conduct security audits and assessments to identify and mitigate potential risks.
Patching and Updates
- Refer to vendor advisories and security updates for patching instructions and version upgrades.