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Red Hat Security Advisory 2021-0809-01

Red Hat Security Advisory 2021-0809-01
Posted Mar 11, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0809-01 - The wpa_supplicant packages contain an 802.1X Supplicant with support for WEP, WPA, WPA2, and various EAP authentication methods. They implement key negotiation with a WPA Authenticator for client stations and controls the roaming and IEEE 802.11 authentication and association of the WLAN driver. Issues addressed include a use-after-free vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-27803
MD5 | c1db023992c473261c32c3a054bdd424

Red Hat Security Advisory 2021-0809-01

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====================================================================
Red Hat Security Advisory

Synopsis: Important: wpa_supplicant security update
Advisory ID: RHSA-2021:0809-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0809
Issue date: 2021-03-11
CVE Names: CVE-2021-27803
====================================================================
1. Summary:

An update for wpa_supplicant is now available for Red Hat Enterprise Linux
8.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

The wpa_supplicant packages contain an 802.1X Supplicant with support for
WEP, WPA, WPA2 (IEEE 802.11i / RSN), and various EAP authentication
methods. They implement key negotiation with a WPA Authenticator for client
stations and controls the roaming and IEEE 802.11 authentication and
association of the WLAN driver.

Security Fix(es):

* wpa_supplicant: Use-after-free in P2P provision discovery processing
(CVE-2021-27803)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1933361 - CVE-2021-27803 wpa_supplicant: Use-after-free in P2P provision discovery processing

6. Package List:

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
wpa_supplicant-2.9-2.el8_3.1.src.rpm

aarch64:
wpa_supplicant-2.9-2.el8_3.1.aarch64.rpm
wpa_supplicant-debuginfo-2.9-2.el8_3.1.aarch64.rpm
wpa_supplicant-debugsource-2.9-2.el8_3.1.aarch64.rpm

ppc64le:
wpa_supplicant-2.9-2.el8_3.1.ppc64le.rpm
wpa_supplicant-debuginfo-2.9-2.el8_3.1.ppc64le.rpm
wpa_supplicant-debugsource-2.9-2.el8_3.1.ppc64le.rpm

s390x:
wpa_supplicant-2.9-2.el8_3.1.s390x.rpm
wpa_supplicant-debuginfo-2.9-2.el8_3.1.s390x.rpm
wpa_supplicant-debugsource-2.9-2.el8_3.1.s390x.rpm

x86_64:
wpa_supplicant-2.9-2.el8_3.1.x86_64.rpm
wpa_supplicant-debuginfo-2.9-2.el8_3.1.x86_64.rpm
wpa_supplicant-debugsource-2.9-2.el8_3.1.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-27803
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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