CVE-2017-15705
Apache SpamAssassin Denial of Service Vulnerability via Malformed HTML Tags
Description
A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. 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 believed 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.
INFO
Published Date :
Sept. 17, 2018, 2:29 p.m.
Last Modified :
Nov. 7, 2023, 2:40 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2017-15705
vulnerability.
Even if cvefeed.io
is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2017-15705
.
URL | Resource |
---|---|
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00002.html | |
http://www.securityfocus.com/bid/105347 | Third Party Advisory VDB Entry |
https://access.redhat.com/errata/RHSA-2018:2916 | Third Party Advisory |
https://lists.apache.org/thread.html/7f6a16bc0fd0fd5e67c7fd95bd655069a2ac7d1f88e42d3c853e601c%40%3Cannounce.apache.org%3E | |
https://lists.debian.org/debian-lts-announce/2018/11/msg00016.html | Third Party Advisory |
https://security.gentoo.org/glsa/201812-07 | |
https://usn.ubuntu.com/3811-1/ | Third Party Advisory |
https://usn.ubuntu.com/3811-2/ | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-15705
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-15705
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Apache Software Foundation https://lists.apache.org/thread.html/7f6a16bc0fd0fd5e67c7fd95bd655069a2ac7d1f88e42d3c853e601c%40%3Cannounce.apache.org%3E [No types assigned] Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/7f6a16bc0fd0fd5e67c7fd95bd655069a2ac7d1f88e42d3c853e601c@%3Cannounce.apache.org%3E -
CVE Modified by [email protected]
Aug. 06, 2019
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00002.html [No Types Assigned] -
CVE Modified by [email protected]
Dec. 16, 2018
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201812-07 [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 07, 2018
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Changed Reference Type https://access.redhat.com/errata/RHSA-2018:2916 No Types Assigned https://access.redhat.com/errata/RHSA-2018:2916 Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/11/msg00016.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/11/msg00016.html Third Party Advisory Changed Reference Type http://www.securityfocus.com/bid/105347 No Types Assigned http://www.securityfocus.com/bid/105347 Third Party Advisory, VDB Entry Changed Reference Type https://usn.ubuntu.com/3811-1/ No Types Assigned https://usn.ubuntu.com/3811-1/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3811-2/ No Types Assigned https://usn.ubuntu.com/3811-2/ Third Party Advisory Changed Reference Type https://lists.apache.org/thread.html/7f6a16bc0fd0fd5e67c7fd95bd655069a2ac7d1f88e42d3c853e601c@%3Cannounce.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/7f6a16bc0fd0fd5e67c7fd95bd655069a2ac7d1f88e42d3c853e601c@%3Cannounce.apache.org%3E Mailing List, Third Party Advisory Added CWE CWE-20 Added CPE Configuration OR *cpe:2.3:a:apache:spamassassin:*:*:*:*:*:*:*:* versions up to (excluding) 3.4.2 Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 14, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3811-2/ [No Types Assigned] Added Reference https://lists.debian.org/debian-lts-announce/2018/11/msg00016.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 07, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3811-1/ [No Types Assigned] -
CVE Modified by [email protected]
Oct. 12, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2018:2916 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 18, 2018
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/105347 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-15705
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-15705
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.91 }} 0.02%
score
0.82918
percentile