# CVE-2020-12413: Firefox ESR: Observable Discrepancy

CVE-2020-12413 is fixed in 2 products on 2 platforms, first by Mozilla Firefox ESR (en-US) 78.0esr, released June 25, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-12413
- Priority: Routine
- CVSS: 5.9 (medium)
- EPSS: 0.0059
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 16, 2023
- Weakness: CWE-203: Observable Discrepancy
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-12413

## Description

The Raccoon attack is a timing attack on DHE ciphersuites inherit in the TLS specification. To mitigate this vulnerability, Firefox disabled support for DHE ciphersuites.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Mozilla Firefox ESR (en-US) | 78.0esr | [Mozilla Firefox ESR (en-US) 78.0esr](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.esr-78.0esr.md) | Jun 25, 2020 |
| Linux | nss Debian 12.15 (bookworm) | 2:3.17-1 | [DEBIAN-CVE-2020-12413](https://patchblox.com/security/data/fix/linux/debian-cve-2020-12413.md) | Feb 16, 2023 |
| Linux | nss Debian 13.5 (trixie) | 2:3.17-1 | [DEBIAN-CVE-2020-12413](https://patchblox.com/security/data/fix/linux/debian-cve-2020-12413.md) | Feb 16, 2023 |
| Linux | nss Debian 14 | 2:3.17-1 | [DEBIAN-CVE-2020-12413](https://patchblox.com/security/data/fix/linux/debian-cve-2020-12413.md) | Feb 16, 2023 |

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