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CVE-2018-12404

5.9 · MEDIUM

A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content.

Published May 2, 2019EPSS 44.25%

Overview

CVE-2018-12404 is a medium-severity vulnerability. It was published on May 2, 2019 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

A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content. This is a variant of the Adaptive Chosen Ciphertext attack (AKA Bleichenbacher attack) and affects all NSS versions prior to NSS 3.41.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Reflists.opensuse.org/opensuse-security-announce/2019-07/msg00021.htmlRefwww.securityfocus.com/bid/107260Refaccess.redhat.com/errata/RHSA-2019:2237Refbugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12404Refcert-portal.siemens.com/productcert/pdf/ssa-379803.pdfReflists.debian.org/debian-lts-announce/2020/09/msg00029.htmlCISAus-cert.cisa.gov/ics/advisories/icsa-21-040-04Refwww.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlReflists.opensuse.org/opensuse-security-announce/2019-07/msg00021.htmlRefwww.securityfocus.com/bid/107260

How CyberStrike helps

Frequently asked questions

What is CVE-2018-12404?

CVE-2018-12404 is a medium-severity vulnerability. It was published on May 2, 2019 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

How severe is CVE-2018-12404?

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-2018-12404?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2018-12404?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-12404 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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