Remote denial of service in Apache HTTP server



Published: 2018-07-18
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-8011
CVE-2018-1333
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Apache HTTP Server
Server applications / Web servers

Vendor Apache Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper input validation

EUVDB-ID: #VU13907

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2018-8011

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

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

The vulnerability exists due to improper filtering of input data within "mod_md" apache module when processing requests. A remote attacker can send a specially crafted HTTP request to the affected web server and trigger denial of service condition via coredumps.


Mitigation

Update to version 2.4.34.

Vulnerable software versions

Apache HTTP Server: 2.4.0 - 2.4.33


CPE2.3 External links

http://www.apache.org/dist/httpd/CHANGES_2.4

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Improper input validation

EUVDB-ID: #VU13908

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2018-1333

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient filtering of incoming data within "mod_http2" apache module. A remote attacker can send a specially crafted HTTP request to the affected web server and trigger daemon crash.

Mitigation

Update to version 2.4.34.

Vulnerable software versions

Apache HTTP Server: 2.4.0 - 2.4.33


CPE2.3 External links

http://www.apache.org/dist/httpd/CHANGES_2.4

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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