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From "Kevin A. McGrail" <kmcgr...@apache.org>
Subject Re: [SECURITY] Apache SpamAssassin 3.4.2 resolves CVE-2017-15705, CVE-2016-1238, CVE-2018-11780 & CVE-2018-11781
Date Sun, 16 Sep 2018 21:11:48 GMT
Per the asf security team, mitre considers the public rc1 from a few days
ago as the start of the clock for the publishing so we were already way
past the 24 hour windiw.

Hopefully, the announcements and reports are obfuscated and bugzilla ia
private so it'll be contained.

On Sun, Sep 16, 2018, 16:59 Reindl Harald <h.reindl@thelounge.net> wrote:

> 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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