---
id: CVE-2012-5568
title: >-
  Apache Tomcat through 7.0.x allows remote attackers to cause a denial of
  service (daemon outage) via partial HTTP requests, as demonstrated by
  Slowloris.
summary: >-
  Apache Tomcat through 7.0.x allows remote attackers to cause a denial of
  service (daemon outage) via partial HTTP requests, as demonstrated by
  Slowloris.
severity: medium
cvss: 5
cvssVector: 'AV:N/AC:L/Au:N/C:N/I:N/A:P'
vendor: apache
product: tomcat
affected:
  - 'tomcat >= 7.0.0, <= 7.0.105'
  - opensuse = 11.4
  - opensuse = 12.1
  - opensuse = 12.2
published: '2012-11-30'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T20:17:04.967'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2012-5568'
references:
  - url: 'http://captainholly.wordpress.com/2009/06/19/slowloris-vs-tomcat/'
    label: secalert@redhat.com
  - url: 'http://lists.opensuse.org/opensuse-updates/2012-12/msg00089.html'
    label: secalert@redhat.com
  - url: 'http://lists.opensuse.org/opensuse-updates/2012-12/msg00090.html'
    label: secalert@redhat.com
  - url: 'http://lists.opensuse.org/opensuse-updates/2013-01/msg00037.html'
    label: secalert@redhat.com
  - url: 'http://openwall.com/lists/oss-security/2012/11/26/2'
    label: secalert@redhat.com
  - url: >-
      http://tomcat.10.n6.nabble.com/How-does-Tomcat-handle-a-slow-HTTP-DoS-tc2147776.html
    label: secalert@redhat.com
  - url: >-
      http://tomcat.10.n6.nabble.com/How-does-Tomcat-handle-a-slow-HTTP-DoS-tc2147779.html
    label: secalert@redhat.com
  - url: 'http://www.securityfocus.com/bid/56686'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=880011'
    label: secalert@redhat.com
  - url: 'https://exchange.xforce.ibmcloud.com/vulnerabilities/80317'
    label: secalert@redhat.com
  - url: 'http://captainholly.wordpress.com/2009/06/19/slowloris-vs-tomcat/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://lists.opensuse.org/opensuse-updates/2012-12/msg00089.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://lists.opensuse.org/opensuse-updates/2012-12/msg00090.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://lists.opensuse.org/opensuse-updates/2013-01/msg00037.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://openwall.com/lists/oss-security/2012/11/26/2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      http://tomcat.10.n6.nabble.com/How-does-Tomcat-handle-a-slow-HTTP-DoS-tc2147776.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      http://tomcat.10.n6.nabble.com/How-does-Tomcat-handle-a-slow-HTTP-DoS-tc2147779.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.securityfocus.com/bid/56686'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=880011'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://exchange.xforce.ibmcloud.com/vulnerabilities/80317'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
epss: 0.09588
epssPercentile: 0.95449
ingestedAt: '2026-10-09T21:12:42.310Z'
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-09T19:08:36.889570Z'
---

## Overview

Apache Tomcat through 7.0.x allows remote attackers to cause a denial of service (daemon outage) via partial HTTP requests, as demonstrated by Slowloris.

## Affected

- `tomcat >= 7.0.0, <= 7.0.105`
- `opensuse = 11.4`
- `opensuse = 12.1`
- `opensuse = 12.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.