CVE-2017-15705
Summary
| CVE | CVE-2017-15705 |
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| State | PUBLIC |
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| Assigner | [email protected] |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2018-09-17 14:29:00 UTC |
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| Updated | 2023-11-07 02:40:00 UTC |
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| 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. |
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NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|
| SpamAssassin: Multiple vulnerabilities (GLSA 201812-07) — Gentoo security |
GENTOO |
security.gentoo.org |
|
| USN-3811-1: SpamAssassin vulnerabilities | Ubuntu security notices |
UBUNTU |
usn.ubuntu.com |
Third Party Advisory |
| Apache Mail Archives |
MLIST |
lists.apache.org |
Mailing List, Third Party Advisory |
| USN-3811-2: SpamAssassin vulnerability | Ubuntu security notices |
UBUNTU |
usn.ubuntu.com |
Third Party Advisory |
| Apache Mail Archives |
|
lists.apache.org |
|
| [security-announce] openSUSE-SU-2019:1831-1: moderate: Security update f |
SUSE |
lists.opensuse.org |
|
| [SECURITY] [DLA 1578-1] spamassassin security update |
MLIST |
lists.debian.org |
Third Party Advisory |
| Red Hat Customer Portal |
REDHAT |
access.redhat.com |
Third Party Advisory |
| Apache SpamAssassin CVE-2017-15705 Denial of Service Vulnerability |
BID |
www.securityfocus.com |
Third Party Advisory, VDB Entry |
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 500642 Alpine Linux Security Update for spamassassin
- 504409 Alpine Linux Security Update for spamassassin
- 710244 Gentoo Linux SpamAssassin Multiple Vulnerabilities (GLSA 201812-07)
