Detections
Analytics
CVE-2018-12020
high
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.
References
https://www.debian.org/security/2018/dsa-4224
https://www.debian.org/security/2018/dsa-4223
https://www.debian.org/security/2018/dsa-4222
https://usn.ubuntu.com/3964-1/
https://usn.ubuntu.com/3675-3/
https://usn.ubuntu.com/3675-2/
https://usn.ubuntu.com/3675-1/
https://lists.debian.org/debian-lts-announce/2021/12/msg00027.html
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
https://github.com/RUB-NDS/Johnny-You-Are-Fired
https://access.redhat.com/errata/RHSA-2018:2181
https://access.redhat.com/errata/RHSA-2018:2180
http://www.openwall.com/lists/oss-security/2019/04/30/4
http://seclists.org/fulldisclosure/2019/Apr/38
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html