CVE-2018-16253
5.9 · MEDIUMOverview
CVE-2018-16253 is a medium-severity vulnerability affecting axtls_project axtls. It was published on November 7, 2018 and has a CVSS 3.0 base score of 5.9 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In sig_verify() in x509.c in axTLS version 2.1.3 and before, the PKCS#1 v1.5 signature verification does not properly verify the ASN.1 metadata. Consequently, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation through fake X.509 certificates. This is an even more permissive variant of CVE-2006-4790 and CVE-2014-1568.
Remediation
Check the references section for vendor advisories and patches from axtls_project. Update axtls to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| axtls_project | axtls | 0 | Affected |
Frequently Asked Questions
What is CVE-2018-16253?
CVE-2018-16253 is a medium-severity vulnerability affecting axtls_project axtls. It was published on November 7, 2018 and has a CVSS 3.0 base score of 5.9 (MEDIUM).
How severe is CVE-2018-16253?
This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2018-16253?
Check the references section for vendor advisories and patches from axtls_project. Update axtls to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2018-16253?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-16253 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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