CVE-2018-0495
4.7 · MEDIUMOverview
CVE-2018-0495 is a medium-severity vulnerability affecting gnupg libgcrypt. It was published on June 13, 2018 and has a CVSS 3.0 base score of 4.7 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
Remediation
Check the references section for vendor advisories and patches from gnupg. Update libgcrypt 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 |
|---|---|---|---|
| gnupg | libgcrypt | >= 0, < 1.7.10 | Affected |
References
Frequently Asked Questions
What is CVE-2018-0495?
CVE-2018-0495 is a medium-severity vulnerability affecting gnupg libgcrypt. It was published on June 13, 2018 and has a CVSS 3.0 base score of 4.7 (MEDIUM).
How severe is CVE-2018-0495?
This vulnerability has a CVSS 3.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2018-0495?
Check the references section for vendor advisories and patches from gnupg. Update libgcrypt 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-2018-0495?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-0495 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
AI agents map your attack surface to find vulnerabilities like this one.
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