Fedora 34 FEDORA-2022-6b512ae9e5 Critical: gzip zgrep File Overwrite

The gzip package contains the popular GNU gzip data compression

program. Gzipped files have a .gz extension.

Gzip should be installed on your system, because it is a

very commonly used data compression program.

zgrep applied to a crafted file name with two or more newlines can no longer

overwrite an arbitrary, attacker-selected file. reproducer: $ touch

foo.gz $ echo foo | gzip > "$(printf '|\n;e touch pwned\n#.gz')" $

zgrep foo *.gz (the unfixed version of zgrep creates the file called pwned)

* Wed Apr 13 2022 Jakub Martisko - 1.10-5

- fix an arbitrary-file-write vulnerability in zgrep

Resolves: CVE-2022-1271

su -c 'dnf upgrade --advisory FEDORA-2022-6b512ae9e5' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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