CVE Vulnerabilities

CVE-2011-3192

Uncontrolled Resource Consumption

Published: Aug 29, 2011 | Modified: Apr 11, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
7.8 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
5 IMPORTANT
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V3
Ubuntu
MEDIUM
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The byterange filter in the Apache HTTP Server 1.3.x, 2.0.x through 2.0.64, and 2.2.x through 2.2.19 allows remote attackers to cause a denial of service (memory and CPU consumption) via a Range header that expresses multiple overlapping ranges, as exploited in the wild in August 2011, a different vulnerability than CVE-2007-0086.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

NameVendorStart VersionEnd Version
Http_serverApache2.0.35 (including)2.0.65 (excluding)
Http_serverApache2.2.0 (including)2.2.20 (excluding)
JBEWS 1.0 for RHEL 4RedHathttpd22-0:2.2.17-16.ep5.el4*
Red Hat Enterprise Linux 3 Extended Lifecycle SupportRedHathttpd-0:2.0.46-78.ent*
Red Hat Enterprise Linux 4RedHathttpd-0:2.0.52-48.ent*
Red Hat Enterprise Linux 5RedHathttpd-0:2.2.3-53.el5_7.1*
Red Hat Enterprise Linux 5RedHathttpd-0:2.2.3-45.el5_6.2*
Red Hat Enterprise Linux 5.3 Long LifeRedHathttpd-0:2.2.3-22.el5_3.3*
Red Hat Enterprise Linux 6RedHathttpd-0:2.2.15-9.el6_1.2*
Red Hat Enterprise Linux 6.0 EUS - Server OnlyRedHathttpd-0:2.2.15-5.el6_0.1*
Red Hat JBoss Enterprise Web Server 1 for RHEL 5RedHathttpd-0:2.2.17-14.1.ep5.el5*
Red Hat JBoss Enterprise Web Server 1 for RHEL 6RedHathttpd-0:2.2.17-13.2.ep5.el6*
Red Hat JBoss Web Server 1.0RedHat*
Apache2Ubuntudevel*
Apache2Ubuntuhardy*
Apache2Ubuntulucid*
Apache2Ubuntumaverick*
Apache2Ubuntunatty*
Apache2Ubuntuupstream*

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References