emacs: CVE-2022-45939: ctags local command execute vulnerability

Debian Bug report logs - #1025009
emacs: CVE-2022-45939: ctags local command execute vulnerability

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: emacs: CVE-2022-45939: ctags local command execute vulnerability

Date: Mon, 28 Nov 2022 19:39:31 +0100

Source: emacs
Version: 1:28.2+1-7
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for emacs.

CVE-2022-45939[0]:
| GNU Emacs through 28.2 allows attackers to execute commands via shell
| metacharacters in the name of a source-code file, because lib-
| src/etags.c uses the system C library function in its implementation
| of the ctags program. For example, a victim may use the "ctags *"
| command (suggested in the ctags documentation) in a situation where
| the current working directory has contents that depend on untrusted
| input.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2022-45939
    https://www.cve.org/CVERecord?id=CVE-2022-45939
[1] https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=d48bb4874bc6cd3e69c7a15fc3c91cc141025c51

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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