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From: Peter Korsgaard <peter@korsgaard.com>
To: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Cc: Angelo Compagnucci <angelo.compagnucci@gmail.com>,
	buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH 1/1] package/fail2ban: fix CVE-2021-32749
Date: Fri, 06 Aug 2021 22:42:42 +0200	[thread overview]
Message-ID: <87mtpugv99.fsf@dell.be.48ers.dk> (raw)
In-Reply-To: <20210730125611.4052704-1-fontaine.fabrice@gmail.com> (Fabrice Fontaine's message of "Fri, 30 Jul 2021 14:56:11 +0200")

>>>>> "Fabrice" == Fabrice Fontaine <fontaine.fabrice@gmail.com> writes:

 > fail2ban is a daemon to ban hosts that cause multiple authentication
 > errors. In versions 0.9.7 and prior, 0.10.0 through 0.10.6, and 0.11.0
 > through 0.11.2, there is a vulnerability that leads to possible remote
 > code execution in the mailing action mail-whois. Command `mail` from
 > mailutils package used in mail actions like `mail-whois` can execute
 > command if unescaped sequences (`\n~`) are available in "foreign" input
 > (for instance in whois output). To exploit the vulnerability, an
 > attacker would need to insert malicious characters into the response
 > sent by the whois server, either via a MITM attack or by taking over a
 > whois server. The issue is patched in versions 0.10.7 and 0.11.3. As a
 > workaround, one may avoid the usage of action `mail-whois` or patch the
 > vulnerability manually.

 > Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>

Committed to 2021.02.x and 2021.05.x, thanks.

-- 
Bye, Peter Korsgaard
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      parent reply	other threads:[~2021-08-06 20:42 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-30 12:56 [Buildroot] [PATCH 1/1] package/fail2ban: fix CVE-2021-32749 Fabrice Fontaine
2021-07-30 21:36 ` Thomas Petazzoni
2021-08-06 20:42 ` Peter Korsgaard [this message]

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