Resource exhaustion in apache2 (Alpine package)



Published: 2011-09-02
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2011-3192
CWE-ID CWE-400
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
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apache2 (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU2934

Risk: High

CVSSv3.1: 8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2011-3192

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to cause DoS conditions on the target system.

The weakness exists due to an error in the ByteRange filter when processing malicious requests in Apache HTTP server. A remote attacker can send a specially crafted HTTP request containing an overly large Range header, exhaust all available memory resources and trigger the application to crash.

Successful exploitation of the vulnerability results in denial service on the vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation

Install update from vendor's website.

Vulnerable software versions

apache2 (Alpine package): 2.2.17-r1 - 2.2.17-r5

External links

http://git.alpinelinux.org/aports/commit/?id=14d8b3ce0d0c7c58bf88f7497905e44f222409a7
http://git.alpinelinux.org/aports/commit/?id=918f5782d54417508c1661fc5cebbd7f1be44bd1


Q & A

Can this vulnerability be exploited remotely?

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

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.



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