Executive Summary

Informations
Name CVE-2017-15705 First vendor Publication 2018-09-17
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Overall CVSS Score 5.3
Base Score 5.3 Environmental Score 5.3
impact SubScore 1.4 Temporal Score 5.3
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact Low
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15705

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 4
Os 1
Os 1
Os 1
Os 1
Os 1

Nessus® Vulnerability Scanner

Date Description
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-46d7a7f63e.nasl - Type : ACT_GATHER_INFO
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-8f0df2c366.nasl - Type : ACT_GATHER_INFO
2018-12-17 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201812-07.nasl - Type : ACT_GATHER_INFO
2018-11-14 Name : The remote Debian host is missing a security update.
File : debian_DLA-1578.nasl - Type : ACT_GATHER_INFO
2018-11-09 Name : The remote Amazon Linux 2 host is missing a security update.
File : al2_ALAS-2018-1103.nasl - Type : ACT_GATHER_INFO
2018-10-19 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2018-1091.nasl - Type : ACT_GATHER_INFO
2018-10-16 Name : The remote CentOS host is missing a security update.
File : centos_RHSA-2018-2916.nasl - Type : ACT_GATHER_INFO
2018-10-01 Name : The remote Fedora host is missing a security update.
File : fedora_2018-6ed251c42b.nasl - Type : ACT_GATHER_INFO
2018-09-27 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_613193a0c1b411e8ae2d54e1ad3d6335.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

https://lists.apache.org/thread.html/7f6a16bc0fd0fd5e67c7fd95bd655069a2ac7d1f...
Source Url
BID http://www.securityfocus.com/bid/105347
GENTOO https://security.gentoo.org/glsa/201812-07
MLIST https://lists.debian.org/debian-lts-announce/2018/11/msg00016.html
REDHAT https://access.redhat.com/errata/RHSA-2018:2916
SUSE http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00002.html
UBUNTU https://usn.ubuntu.com/3811-1/
https://usn.ubuntu.com/3811-2/

Alert History

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Date Informations
2023-11-07 21:41:25
  • Multiple Updates
2021-05-04 12:58:43
  • Multiple Updates
2021-04-22 02:11:36
  • Multiple Updates
2020-05-23 02:04:04
  • Multiple Updates
2020-05-23 00:57:33
  • Multiple Updates
2019-08-07 12:08:56
  • Multiple Updates
2018-12-16 17:19:06
  • Multiple Updates
2018-12-08 00:19:07
  • Multiple Updates
2018-11-14 17:19:19
  • Multiple Updates
2018-11-07 17:20:13
  • Multiple Updates
2018-10-12 17:19:43
  • Multiple Updates
2018-09-18 17:19:44
  • Multiple Updates
2018-09-17 21:20:09
  • First insertion