| Name | CVE-2018-12020 |
| Description | mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and verification actions, which allows remote attackers to spoof the output that GnuPG sends on file descriptor 2 to other programs that use the "--status-fd 2" option. For example, the OpenPGP data might represent an original filename that contains line feed characters in conjunction with GOODSIG or VALIDSIG status codes. |
| 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-2862-1, DSA-4222-1, DSA-4223-1, DSA-4224-1, ELA-5-1, ELA-533-1 |
| Debian Bugs | 901088 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| enigmail (PTS) | jessie, jessie (lts) | 2:1.9.9-1~deb8u1 | vulnerable |
| buster | 2:2.2.4-0.2~deb10u1 | fixed | |
| buster (security) | 2:2.1.3+ds1-4~deb10u2 | fixed | |
| sid, bullseye | 2:2.2.4-0.3 | fixed | |
| gnupg (PTS) | jessie, jessie (lts) | 1.4.18-7+deb8u5 | fixed |
| gnupg1 (PTS) | stretch (security), stretch (lts), stretch | 1.4.21-4+deb9u1 | fixed |
| buster | 1.4.23-1 | fixed | |
| trixie, bullseye, bookworm | 1.4.23-1.1 | fixed | |
| sid | 1.4.23-2 | fixed | |
| gnupg2 (PTS) | jessie, jessie (lts) | 2.0.26-6+deb8u3 | fixed |
| stretch (security) | 2.1.18-8~deb9u2 | fixed | |
| stretch (lts), stretch | 2.1.18-8~deb9u5 | fixed | |
| buster, buster (security) | 2.2.12-1+deb10u2 | fixed | |
| bullseye (security), bullseye | 2.2.27-2+deb11u2 | fixed | |
| trixie, bookworm | 2.2.40-1.1 | fixed | |
| sid | 2.2.40-3 | fixed | |
| python-gnupg (PTS) | jessie, jessie (lts) | 0.3.6-1+deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 0.3.9-1+deb9u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| enigmail | source | wheezy | (unfixed) | end-of-life | ||
| enigmail | source | jessie | (unfixed) | end-of-life | ||
| enigmail | source | (unstable) | 2:2.0.7-1 | |||
| gnupg | source | wheezy | 1.4.12-7+deb7u10 | ELA-5-1 | ||
| gnupg | source | jessie | 1.4.18-7+deb8u5 | DSA-4224-1 | ||
| gnupg | source | (unstable) | (unfixed) | |||
| gnupg1 | source | stretch | 1.4.21-4+deb9u1 | DSA-4223-1 | ||
| gnupg1 | source | (unstable) | 1.4.22-5 | 901088 | ||
| gnupg2 | source | wheezy | (unfixed) | end-of-life | ||
| gnupg2 | source | jessie | 2.0.26-6+deb8u2 | DSA-4222-1 | ||
| gnupg2 | source | stretch | 2.1.18-8~deb9u2 | DSA-4222-1 | ||
| gnupg2 | source | (unstable) | 2.2.8-1 | |||
| python-gnupg | source | jessie | 0.3.6-1+deb8u2 | ELA-533-1 | ||
| python-gnupg | source | stretch | 0.3.9-1+deb9u1 | DLA-2862-1 |
[jessie] - enigmail <end-of-life> (see https://lists.debian.org/debian-lts-announce/2019/02/msg00002.html)
https://dev.gnupg.org/T4012
https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000425.html
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=210e402acd3e284b32db1901e43bf1470e659e49 (STABLE-BRANCH-2-2)
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=2326851c60793653069494379b16d84e4c10a0ac (STABLE-BRANCH-1-4)
https://www.openwall.com/lists/oss-security/2018/06/13/10
https://neopg.io/blog/gpg-signature-spoof/