Title: EGI SVG 'ADVISORY' [TLP:WHITE] HIGH risk CVE-2021-40438 /
httpd mod_proxy vulnerability [EGI-SVG-CVE-2021-40438]
Date: 2021-11-01
Updated:
Affected software and risk
==========================
HIGH risk vulnerability concerning httpd mod_proxy.
Package : httpd
CVE ID : CVE-2021-40438
Bug ID : 2005117
A Server-Side Request Forgery (SSRF) flaw was found in mod_proxy of httpd.
This flaw allows a remote, unauthenticated attacker to make the httpd server
forward requests to an arbitrary server. The attacker could get, modify, or
delete resources on other services that may be behind a firewall and
inaccessible otherwise. The impact of this flaw varies based on what services
and resources are available on the httpd network. [R 1], [R 2]
Actions required/recommended
============================
Sites should update as soon as possible, updated packages are available.
Component installation information
==================================
Sites running RHEL 8 and RHEL 7 should see [R 1]
Sites running CentOS should also see [R 1]
Sites running Debian should see [R 3]
Sites running Ubuntu should see [R 4]
Sites running Scientific Linux should see [R 5]
More information
================
For more information see [R 1]
TLP and URL
===========
** WHITE information - Limited distribution
- see https://go.egi.eu/tlp for
distribution restrictions **
URL: https://advisories.egi.eu/Advisory-SVG-CVE-2021-40438
Minor updates may be made without re-distribution to the sites
Comments
========
Comments or questions should be sent to svg-rat at mailman.egi.eu
If you find or become aware of another vulnerability which is relevant to EGI
you may report it by e-mail to
report-vulnerability at egi.eu
the EGI Software Vulnerability Group will take a look according to the procedure
defined in [R 6].
Note that this is undergoing revision.
References
==========
[R 1] https://access.redhat.com/security/cve/CVE-2021-40438
[R 2] https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-40438
[R 3] https://security-tracker.debian.org/tracker/CVE-2021-40438
[R 4] http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-40438.html
[R 5] https://www.scientificlinux.org/category/sl-errata/
[R 6] https://documents.egi.eu/public/ShowDocument?docid=3145
Credit
======
SVG was alerted to this vulnerability by Mischa Salle
Timeline
========
Yyyy-mm-dd [EGI-SVG-CVE-2021-40438]
2021-10-21 SVG alerted to this issue by Mischa Salle of the SVG
2021-10-21 Acknowledgement from the EGI SVG to the reporter
2021-10--- Investigation of vulnerability and relevance to EGI carried out
2021-10-28 EGI SVG Risk Assessment completed
2021-11-01 Advisory/Alert sent to sites
2022-07-08 Placed on public advisories.eu web page
Context
=======
This advisory has been prepared as part of the effort to fulfil EGI SVG's
purpose "To minimize the risk to the EGI infrastructure arising from software
vulnerabilities"
The risk is that assessed by the group, according to the EGI SVG issue handling
procedure [R 6] in the context of how the software is used in the EGI
infrastructure. It is the opinion of the group, we do not guarantee it to be
correct. The risk may also be higher or lower in other deployments depending on
how the software is used.
-----------------------------
This advisory is subject to the Creative commons licence
https://creativecommons.org/licenses/by/4.0/ and
the EGI https://www.egi.eu/ Software Vulnerability Group must be credited.
-----------------------------
Note that the SVG issue handling procedure is currently under review, to take
account of the increasing inhomogeneity of the EGI infrastructure.
On behalf of the EGI SVG,