GNU bug report logs - #47351
python-pygments@2.7.3 is vulnerable to at least CVE-2021-20270

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Package: guix;

Reported by: Léo Le Bouter <lle-bout <at> zaclys.net>

Date: Tue, 23 Mar 2021 23:21:02 UTC

Severity: normal

Tags: security

Done: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>

Bug is archived. No further changes may be made.

Full log

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Léo Le Bouter <lle-bout <at> zaclys.net>
To: bug-guix <at> gnu.org
Subject: python-pygments <at> 2.7.3 is vulnerable to at least CVE-2021-20270
Date: Wed, 24 Mar 2021 00:20:14 +0100

[Message part 1 (text/plain, inline)]
CVE-2021-20270	23.03.21 18:15
An infinite loop in SMLLexer in Pygments
versions 1.5 to 2.7.3 may lead to denial of service when performing
syntax highlighting of a Standard ML (SML) source file, as demonstrated
by input that only contains the "exception" keyword.

Upstream version 2.8.1 is not affected.

Because this package would cause 456 dependents to be rebuilt, I
prepared 69e3b7f4bea9ab6c9520c5b5bdc14e0388475c3d and will push soon to
staging once master is merged in it so that .guix-authorizations
contains my key. I also attached the patch (trivial).

Opening this bug to track when this lands into master

[0001-gnu-python-pygments-Update-to-2.8.1-security-fixes.patch (text/x-patch, attachment)]
[signature.asc (application/pgp-signature, inline)]
This bug report was last modified 3 years and 114 days ago.

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