CVE-2019-9153 : Security Advisory and Response
Learn about CVE-2019-9153 affecting OpenPGP.js <=4.1.2. Discover the impact, affected systems, exploitation method, and mitigation steps to prevent signature manipulation.
OpenPGP.js <=4.1.2 is vulnerable to inadequate verification of a cryptographic signature, allowing attackers to manipulate signed messages.
Understanding CVE-2019-9153
What is CVE-2019-9153?
OpenPGP.js <=4.1.2 has a vulnerability that enables adversaries to forge the authenticity of messages by substituting original signatures with specific types of signatures.
The Impact of CVE-2019-9153
This vulnerability allows attackers to manipulate signed messages, potentially leading to unauthorized actions or misinformation.
Technical Details of CVE-2019-9153
Vulnerability Description
The flaw in OpenPGP.js <=4.1.2 lies in the inadequate verification of cryptographic signatures, enabling the forging of signed messages.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: <=4.1.2
Exploitation Mechanism
Attackers can exploit this vulnerability by replacing original signatures with specific signature types, such as "standalone" or "timestamp," to manipulate the authenticity of messages.
Mitigation and Prevention
Immediate Steps to Take
- Update OpenPGP.js to version 4.2.0 or later.
- Implement additional verification mechanisms for cryptographic signatures.
Long-Term Security Practices
- Regularly monitor for security updates and patches for OpenPGP.js.
- Educate users on verifying message authenticity and signatures.
Patching and Updates
Ensure timely installation of security patches and updates for OpenPGP.js to mitigate the risk of signature manipulation.