| Name | CVE-2018-10846 |
| Description | A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found. An attacker could use a combination of "Just in Time" Prime+probe attack in combination with Lucky-13 attack to recover plain text using crafted packets. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1560-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| gnutls28 (PTS) | bullseye | 3.7.1-5+deb11u5 | fixed |
| bullseye (security) | 3.7.1-5+deb11u6 | fixed |
| bookworm | 3.7.9-2+deb12u3 | fixed |
| sid, trixie | 3.8.8-2 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://gitlab.com/gnutls/gnutls/merge_requests/657
https://gitlab.com/gnutls/gnutls/commit/ce671a6db9e47006cff152d485091141b1569f39 (master)
The proposed fix is to introduce a new option to force encrypt-then-mac
instead of correcting the issue.
https://eprint.iacr.org/2018/747
Backport of the MR657 to 3.5.x: https://gitlab.com/gnutls/gnutls/merge_requests/663