Denial of service in Apache HTTP Server

1) Resource management error

EUVDB-ID: #VU77912

Risk: Medium

CVSSv3.1: 7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2007-6750

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the web server when handling HTTP requests, related to mod_reqtimeout module. A remote attacker can pass specially crafted requests to the web server and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache HTTP Server: 1.3 - 2.2.14

External links

http://archives.neohapsis.com/archives/bugtraq/2007-01/0229.html
http://ha.ckers.org/slowloris/
http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00026.html
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00002.html
http://marc.info/?l=bugtraq&m=136612293908376&w=2
http://www.securityfocus.com/bid/21865
http://www.securitytracker.com/id/1038144
http://exchange.xforce.ibmcloud.com/vulnerabilities/72345
http://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05111017
http://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
http://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19481

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.