Arbitrary code execution via Vimscript code injection in netrw plugin

Summary

Vim is an open source, command line text editor. Prior to 9.2.0663, a Vimscript code injection vulnerability exists in s:NetrwLocalRmFile() in the netrw plugin (runtime/pack/dist/opt/netrw/autoload/netrw.vim) when deleting a local file from the browser. A filename derived from the buffer's directory listing is interpolated into an Ex command line passed to :execute with only the backslash character escaped, allowing a crafted filename containing a bar (|) to terminate the intended command and execute arbitrary Vimscript, including shell commands via :call system() and :!. This vulnerability is fixed in 9.2.0663. A flaw was found in Vim, specifically within the netrw plugin. A local user could exploit a Vimscript code injection vulnerability by attempting to delete a specially crafted local file from the browser. This crafted filename, containing a bar character, could be interpolated into an Ex command, allowing for the execution of arbitrary Vimscript, including shell commands. This could lead to arbitrary code execution on the affected system. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-94. No fixing RHSA erratum has published yet; monitor the Red Hat CVE page and patch when it ships.