# CVE-2018-10845: gnutls-bin: It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack

CVE-2018-10845 is fixed in 5 products on 1 platform, first by gnutls-bin 3.5.18-1ubuntu1.1, released March 26, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-10845
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0361
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 21, 2018

## Description

It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gnutls-bin Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.1 | [gnutls-bin 3.5.18-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gnutls-bin-3.5.18-1ubuntu1.1.md) | Mar 26, 2019 |
| Linux | libgnutls-dane0 Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.1 | [libgnutls-dane0 3.5.18-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgnutls-dane0-3.5.18-1ubuntu1.1.md) | Mar 26, 2019 |
| Linux | libgnutls-openssl27 Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.1 | [libgnutls-openssl27 3.5.18-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgnutls-openssl27-3.5.18-1ubuntu1.1.md) | Mar 26, 2019 |
| Linux | libgnutls30 Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.1 | [libgnutls30 3.5.18-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgnutls30-3.5.18-1ubuntu1.1.md) | Mar 26, 2019 |
| Linux | libgnutlsxx28 Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.1 | [libgnutlsxx28 3.5.18-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgnutlsxx28-3.5.18-1ubuntu1.1.md) | Mar 26, 2019 |

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