Security Advisory

HTTPD - CVE-2017-3169, CVE-2017-7679
Published: July 16, 2018
Last Update: October 11, 2019

In June 2017, Apache HTTPD released a security advisory detailing several security issues. The following vulnerabilities reported in the Apache HTTP advisory affect the ACOS HTTP and HTTPS management services and are addressed in this document.

Item # Vulnerability ID Score Source Score Summary
1 CVE-2017-3169 CVSS 3.0 9.8 Critical httpd: mod_ssl NULL pointer dereference [1]
2 CVE-2017-7679 CVSS 3.0 9.8 Critical httpd: mod_mime buffer overread [2]
Affected Releases

The table below indicates releases of ACOS exposed to these vulnerabilities and ACOS releases that address them. ACOS release families not indicated below are unaffected by these vulnerabilities.

Customers using affected ACOS releases can overcome vulnerability exposures by updating to the indicated resolved release. If the table does not list a corresponding resolved or unaffected release, then no ACOS release update is currently available.

Releases Affected Releases Resolved or Unaffected
4.1.2 – 4.1.2-P2 4.1.2-P3
4.1.1 – 4.1.1-P5 4.1.1-P6
3.1.0-P1 – 3.2.2-P2 3.2.2-P3
4.1.100 – 4.1.100-P5 4.1.100-P5-SP1
4.1.0 – 4.1.0-P9 4.1.0-P10

(a) Including all updates to the release(s).

Workarounds and Mitigations

Common security best practices in the industry for network appliance management and control planes can enhance protection against remote malicious attacks. Limit the exploitable attack surface for critical, infrastructure, networking equipment through the use of access lists or firewall filters to and from only trusted, administrative networks or hosts.

Software Updates

Software updates that address these vulnerabilities are or will be published at the following URL:

Vulnerability Details

The following table shares brief descriptions for the vulnerabilities addressed in this document.

Vulnerability ID Vulnerability Description

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_ssl may dereference a NULL pointer when third-party modules call ap_hook_process_connection() during an HTTP request to an HTTPS port.


In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_mime can read one byte past the end of a buffer when sending a malicious Content-Type response header.

Related Links

The following table shares brief descriptions for the vulnerabilities addressed in this document.

Ref # General Link
[1] NIST NVD, CVE-2017-3169
[2] NIST NVD, CVE-2017-7679


Modification History
Revision Date Description
1.0 July 16, 2018

Initial Publication

2.0 July 18, 2018

Corrected ACOS 3.x affected release.

3.0 November 2, 2018

Added indication of ACOS functions affected.

4.0 October 11, 2019

Added 4.1.100 release family.

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