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Category:   Application (Web Server/CGI)  >   Apache HTTPD Vendors:   Apache Software Foundation
(Oracle Issues Fix for Oracle Linux) Apache HTTPD Use-After-Free Memory Error in Processing HTTP OPTIONS Requests Lets Remote Users Obtain Potentially Sensitive Information on the Target System in Certain Cases
SecurityTracker Alert ID:  1039557
SecurityTracker URL:  http://securitytracker.com/id/1039557
CVE Reference:   CVE-2017-9798   (Links to External Site)
Date:  Oct 11 2017
Impact:   Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.4.28
Description:   A vulnerability was reported in Apache HTTPD. A remote user can obtain potentially sensitive information on the target system in certain cases.

On systems with the Limit directive set within a '.htaccess' file and set to an invalid HTTP method, a remote user can send a specially crafted HTTP OPTIONS request for a path to trigger a use-after-free memory error and view potentially sensitive information from process memory on the target system.

This vulnerability is referred to as "Optionsbleed".

The original advisory is available at:

https://blog.fuzzing-project.org/60-Optionsbleed-HTTP-OPTIONS-method-can-leak-Apaches-server-memory.html

Hanno Bock reported this vulnerability.

Impact:   A remote user can obtain potentially sensitive information on the target system in certain cases.
Solution:   Oracle has issued a fix.

The Oracle Linux advisory is available at:

http://linux.oracle.com/errata/ELSA-2017-2882.html

Vendor URL:  linux.oracle.com/errata/ELSA-2017-2882.html (Links to External Site)
Cause:   Access control error, State error
Underlying OS:  Linux (Oracle)
Underlying OS Comments:  7

Message History:   This archive entry is a follow-up to the message listed below.
Sep 19 2017 Apache HTTPD Use-After-Free Memory Error in Processing HTTP OPTIONS Requests Lets Remote Users Obtain Potentially Sensitive Information on the Target System in Certain Cases



 Source Message Contents

Subject:  [El-errata] ELSA-2017-2882 Moderate: Oracle Linux 7 httpd security update

Oracle Linux Security Advisory ELSA-2017-2882

http://linux.oracle.com/errata/ELSA-2017-2882.html

The following updated rpms for Oracle Linux 7 have been uploaded to the 
Unbreakable Linux Network:

x86_64:
httpd-2.4.6-67.0.1.el7_4.5.x86_64.rpm
httpd-devel-2.4.6-67.0.1.el7_4.5.x86_64.rpm
httpd-manual-2.4.6-67.0.1.el7_4.5.noarch.rpm
httpd-tools-2.4.6-67.0.1.el7_4.5.x86_64.rpm
mod_ldap-2.4.6-67.0.1.el7_4.5.x86_64.rpm
mod_proxy_html-2.4.6-67.0.1.el7_4.5.x86_64.rpm
mod_session-2.4.6-67.0.1.el7_4.5.x86_64.rpm
mod_ssl-2.4.6-67.0.1.el7_4.5.x86_64.rpm


SRPMS:
http://oss.oracle.com/ol7/SRPMS-updates/httpd-2.4.6-67.0.1.el7_4.5.src.rpm



Description of changes:

[2.4.6-67.0.1.el7_4.5]
- replace index.html with Oracle's index page oracle_index.html

[2.4.6-67.5]
- Resolves: #1493064 - CVE-2017-9798 httpd: Use-after-free by limiting
   unregistered HTTP method


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