| 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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more) |
| References | DLA-1560-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| gnutls28 (PTS) | buster | 3.6.7-4+deb10u8 | fixed |
| buster (security) | 3.6.7-4+deb10u10 | fixed | |
| bullseye | 3.7.1-5+deb11u2 | fixed | |
| bullseye (security) | 3.7.1-5+deb11u3 | fixed | |
| bookworm, sid | 3.7.9-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| gnutls26 | source | (unstable) | (unfixed) | |||
| gnutls28 | source | experimental | 3.6.3-1 | |||
| gnutls28 | source | jessie | 3.3.30-0+deb8u1 | DLA-1560-1 | ||
| gnutls28 | source | stretch | 3.5.8-5+deb9u4 | |||
| gnutls28 | source | (unstable) | 3.5.19-1 |
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