Bug 1629521 (CVE-2017-15705) - CVE-2017-15705 spamassassin: Certain unclosed tags in crafted emails allow for scan timeouts and result in denial of service
Summary: CVE-2017-15705 spamassassin: Certain unclosed tags in crafted emails allow fo...
Alias: CVE-2017-15705
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1629522 1629523 1632998 1632999
Blocks: 1629527
TreeView+ depends on / blocked
Reported: 2018-09-17 03:15 UTC by Sam Fowler
Modified: 2021-02-16 23:02 UTC (History)
6 users (show)

Fixed In Version: spamassassin 3.4.2
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the way SpamAssassin processes HTML email containing unclosed HTML tags. A carefully crafted mail message could cause SpamAssassin to consume significant resources. If a large number of these messages are sent, a denial of service could occur potentially delaying or preventing the delivery of email.
Clone Of:
Last Closed: 2019-06-10 10:37:50 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:2916 0 None None None 2018-10-11 21:29:44 UTC

Description Sam Fowler 2018-09-17 03:15:42 UTC
Apache SpamAssassin before version 3.4.2 is vulnerable to a denial of service in the handling of crafted email. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts.

External Reference:


Comment 1 Sam Fowler 2018-09-17 03:16:06 UTC
Created spamassassin tracking bugs for this issue:

Affects: fedora-all [bug 1629522]

Comment 6 errata-xmlrpc 2018-10-11 21:29:38 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:2916 https://access.redhat.com/errata/RHSA-2018:2916

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