| Name | CVE-2020-10759 |
| Description | A PGP signature bypass flaw was found in fwupd (all versions), which could lead to the installation of unsigned firmware. As per upstream, a signature bypass is theoretically possible, but not practical because the Linux Vendor Firmware Service (LVFS) is either not implemented or enabled in versions of fwupd shipped with Red Hat Enterprise Linux 7 and 8. The highest threat from this vulnerability is to confidentiality and integrity. |
| 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-2274-1 |
| Debian Bugs | 962517 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| fwupd (PTS) | bullseye | 1.5.7-4 | fixed |
| bookworm | 1.8.12-2 | fixed | |
| sid, trixie | 1.9.25-1 | fixed | |
| libjcat (PTS) | bullseye | 0.1.3-2 | fixed |
| bookworm | 0.1.9-1 | fixed | |
| sid, trixie | 0.2.0-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| fwupd | source | stretch | 0.7.4-2+deb9u1 | DLA-2274-1 | ||
| fwupd | source | buster | 1.2.13-1 | |||
| fwupd | source | (unstable) | 1.3.10-1 | 962517 | ||
| libjcat | source | (unstable) | 0.1.3-1 |
https://bugzilla.redhat.com/show_bug.cgi?id=1844316
https://github.com/justinsteven/advisories/blob/master/2020_fwupd_dangling_s3_bucket_and_CVE-2020-10759_signature_verification_bypass.md
Fixed by: https://github.com/fwupd/fwupd/commit/21f2d12fccef63b8aaa99ec53278ce18250b0444 (1.3.10)
Introduced with: https://github.com/fwupd/fwupd/commit/36a889034c3d34ae4ac4530ea7b6b16e82476fae (0.1.2)
https://github.com/hughsie/libjcat/commit/839b89f45a38b2373bf5836337a33f450aaab72e