# CVE-2018-12404: libnss3: A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content

CVE-2018-12404 is fixed in 2 products on 1 platform, first by libnss3 2:3.35-2ubuntu2.1, released December 11, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-12404
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.4425
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 11, 2018

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libnss3 Ubuntu 18.04.6 LTS (bionic) | 2:3.35-2ubuntu2.1 | [libnss3 2:3.35-2ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libnss3-2-3.35-2ubuntu2.1.md) | Dec 11, 2018 |
| Linux | libnss3-tools Ubuntu 18.04.6 LTS (bionic) | 2:3.35-2ubuntu2.1 | [libnss3-tools 2:3.35-2ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libnss3-tools-2-3.35-2ubuntu2.1.md) | Dec 11, 2018 |

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