Bug 1743996 (CVE-2019-10097) - CVE-2019-10097 httpd: null-pointer dereference in mod_remoteip
Summary: CVE-2019-10097 httpd: null-pointer dereference in mod_remoteip
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-10097
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1743997 1747290 1747291
Blocks: 1744000
TreeView+ depends on / blocked
 
Reported: 2019-08-21 06:16 UTC by Dhananjay Arunesh
Modified: 2023-03-24 15:17 UTC (History)
22 users (show)

Fixed In Version: httpd 2.4.41
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was discovered in Apache httpd, in mod_remoteip. A trusted proxy using the "PROXY" protocol could send specially crafted headers that can cause httpd to experience a stack buffer overflow or NULL pointer dereference, leading to a crash or other potential consequences. This issue could only be exploited by configured trusted intermediate proxy servers. HTTP clients such as browsers could not exploit the vulnerability.
Clone Of:
Environment:
Last Closed: 2019-12-10 13:24:04 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:4126 0 None None None 2019-12-10 07:57:24 UTC
Red Hat Product Errata RHSA-2020:1336 0 None None None 2020-04-06 19:10:15 UTC
Red Hat Product Errata RHSA-2020:1337 0 None None None 2020-04-06 19:27:01 UTC
Red Hat Product Errata RHSA-2020:4751 0 None None None 2020-11-04 03:35:07 UTC

Description Dhananjay Arunesh 2019-08-21 06:16:00 UTC 
A vulnerability was found in httpd, where mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients.
Comment 1 Dhananjay Arunesh 2019-08-21 06:16:21 UTC 
Created httpd tracking bugs for this issue:

Affects: fedora-all [bug 1743997]
Comment 2 Dhananjay Arunesh 2019-08-21 06:18:07 UTC 
External References:

https://httpd.apache.org/security/vulnerabilities_24.html
Comment 4 Joshua Padman 2019-08-28 12:17:34 UTC 
This vulnerability is out of security support scope for the following product:
 * Red Hat JBoss Web Server 3 
 * Red Hat JBoss Enterprise Web Server 2

Please refer to https://access.redhat.com/support/policy/updates/jboss_notes for more details.
Comment 7 Doran Moppert 2019-09-04 03:30:38 UTC 
Mitigation:

This flaw is only exploitable if RemoteIP* directives are used in Apache httpd configuration.  The following command can be used to search for possible vulnerable configurations:

    grep -R '^\s*RemoteIP' /etc/httpd/

See https://httpd.apache.org/docs/2.4/mod/mod_remoteip.html
Comment 13 errata-xmlrpc 2019-12-10 07:57:22 UTC 
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS

Via RHSA-2019:4126 https://access.redhat.com/errata/RHSA-2019:4126
Comment 14 Product Security DevOps Team 2019-12-10 13:24:04 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-10097
Comment 16 errata-xmlrpc 2020-04-06 19:10:13 UTC 
This issue has been addressed in the following products:

  JBoss Core Services Apache HTTP Server 2.4.37 SP2

Via RHSA-2020:1336 https://access.redhat.com/errata/RHSA-2020:1336
Comment 17 errata-xmlrpc 2020-04-06 19:27:00 UTC 
This issue has been addressed in the following products:

  JBoss Core Services on RHEL 6
  JBoss Core Services on RHEL 7

Via RHSA-2020:1337 https://access.redhat.com/errata/RHSA-2020:1337
Comment 18 errata-xmlrpc 2020-11-04 03:35:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4751 https://access.redhat.com/errata/RHSA-2020:4751
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