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Date: Sun, 16 Sep 2018 22:58:50 +0200
From: Reindl Harald <h.reindl@...lounge.net>
To: "Kevin A. McGrail" <kmcgrail@...che.org>,
Spamassassin <users@...mAssassin.apache.org>,
SpamAssassin Devel List <dev@...massassin.apache.org>,
announce@...massassin.apache.org, announce@...che.org
Cc: security@...massassin.apache.org, oss-security@...ts.openwall.com
Subject: Re: [SECURITY] Apache SpamAssassin 3.4.2 resolves CVE-2017-15705,
CVE-2016-1238, CVE-2018-11780 & CVE-2018-11781
i doubt that it is wiese to blwo out security notes *that short* after
release and *that long* after the last release
Am 16.09.18 um 18:59 schrieb Kevin A. McGrail:
> Apache SpamAssassin 3.4.2 was recently released [1], and fixes several
> issues of security note.
>
> First, a denial of service vulnerability that exists in all modern versions.
>
> The vulnerability arises with certain unclosed tags in emails that cause
> markup to be handled incorrectly leading to scan timeouts.
>
> In Apache SpamAssassin, using HTML::Parser, we setup an object and hook
> into the begin and end tag event handlers In both cases, the "open"
> event is immediately followed by a "close" event - even if the tag *does
> not* close in the HTML being parsed.
>
> Because of this, we are missing the "text" event to deal with the object
> normally. This can cause carefully crafted emails that might take more
> scan time than expected leading to a Denial of Service.
>
> The issue is possibly a bug or design decision in HTML::Parser that
> specifically impacts the way Apache SpamAssassin uses the module with
> poorly formed html.
>
> The exploit has been seen in the wild but not believe to have been
> purposefully part of a Denial of Service attempt. We are concerned that
> there may be attempts to abuse the vulnerability in the future.
> Therefore, we strongly recommend all users of these versions upgrade to
> Apache SpamAssassin 3.4.2 as soon as possible.
>
> This issue has been assigned CVE id CVE-2017-15705 [2].
>
>
> Second, this release also fixes a reliance on "." in @INC in one
> configuration script. Whether this can be exploited in any way is
> uncertain.
>
> This issue has been assigned CVE id CVE-2016-1238 [3].
>
>
> Third, this release fixes a potential Remote Code Execution bug with the
> PDFInfo plugin. Thanks to cPanel Security Team for their report of this
> issue.
>
> This issue has been assigned CVE id CVE-2018-11780 [4].
>
>
> Fourth, this release fixes a local user code injection in the meta rule
> syntax. Thanks again to cPanel Security Team for their report of this issue.
>
> This issue has been assigned CVE id CVE-2018-11781 [5].
>
>
> To contact the Apache SpamAssassin security team, please e-mail
> security at spamassassin.apache.org. For more information about Apache
> SpamAssassin, visit the http://spamassassin.apache.org/ web site.
>
> Apache SpamAssassin Security Team
>
> [1]:
> https://lists.apache.org/thread.html/1ac11532235b5459aa16c4e9d636bf4aa0b141d347d1361e40cc1b78@%3Cannounce.apache.org%3E
>
> [2]: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-15705
>
> [3]: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2016-1238
>
> [4]: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-11780
>
> [5]: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-11781
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