CVE-2019-14853 : Security Advisory and Response
Learn about CVE-2019-14853, a flaw in error handling in python-ecdsa before version 0.13.3 that could lead to denial of service attacks. Find out how to mitigate and prevent this vulnerability.
A flaw in error handling in python-ecdsa prior to version 0.13.3 could lead to unexpected exceptions during signature decoding, potentially resulting in a denial of service attack.
Understanding CVE-2019-14853
A vulnerability in python-ecdsa that could be exploited for a denial of service attack.
What is CVE-2019-14853?
- An error-handling flaw in python-ecdsa before version 0.13.3
- Malformed DER signatures during decoding could lead to unexpected exceptions
- Impact: Low severity with a CVSS base score of 3.7
The Impact of CVE-2019-14853
The vulnerability could allow attackers to cause denial of service by triggering unexpected exceptions during signature decoding.
Technical Details of CVE-2019-14853
Details about the vulnerability in python-ecdsa.
Vulnerability Description
- Error handling flaw in python-ecdsa before version 0.13.3
- Malformed DER signatures during decoding could lead to unexpected exceptions
Affected Systems and Versions
- Product: python-ecdsa
- Vendor: [UNKNOWN]
- Affected Version: 0.13.3
Exploitation Mechanism
- Attack Complexity: HIGH
- Attack Vector: NETWORK
- Availability Impact: LOW
- Privileges Required: NONE
- Scope: UNCHANGED
Mitigation and Prevention
Ways to mitigate and prevent exploitation of CVE-2019-14853.
Immediate Steps to Take
- Update python-ecdsa to version 0.13.3 or later
- Monitor for any unusual activities on the system
Long-Term Security Practices
- Regularly update software and libraries
- Implement proper error handling mechanisms in applications
Patching and Updates
- Apply security patches promptly
- Stay informed about security advisories and updates