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RHEL 8.1: RHSA-2021:0818-01 Important: wpa_supplicant Use-After-Free

red hat
Calendar Grey March 15, 2021
Dist Redhat Esm H88
New wpa_supplicant patch released for Red Hat Enterprise Linux 8.1 addresses critical security vulnerabilities affecting users and system integrity.
An update for wpa_supplicant is now available for Red Hat Enterprise Linux 8.1 Extended Update Support

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

Summary

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.

Topics%20covered

Topics Covered

security advisory network security security update Red Hat update Red Hat Enterprise Linux important security impact wpa_supplicant use-after-free 802.1X

References

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

Package List

Red Hat Enterprise Linux BaseOS EUS (v. 8.1):
Source: wpa_supplicant-2.7-2.el8_1.1.src.rpm
aarch64: wpa_supplicant-2.7-2.el8_1.1.aarch64.rpm wpa_supplicant-debuginfo-2.7-2.el8_1.1.aarch64.rpm wpa_supplicant-debugsource-2.7-2.el8_1.1.aarch64.rpm
ppc64le: wpa_supplicant-2.7-2.el8_1.1.ppc64le.rpm wpa_supplicant-debuginfo-2.7-2.el8_1.1.ppc64le.rpm wpa_supplicant-debugsource-2.7-2.el8_1.1.ppc64le.rpm
s390x: wpa_supplicant-2.7-2.el8_1.1.s390x.rpm wpa_supplicant-debuginfo-2.7-2.el8_1.1.s390x.rpm wpa_supplicant-debugsource-2.7-2.el8_1.1.s390x.rpm
x86_64: wpa_supplicant-2.7-2.el8_1.1.x86_64.rpm wpa_supplicant-debuginfo-2.7-2.el8_1.1.x86_64.rpm wpa_supplicant-debugsource-2.7-2.el8_1.1.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:0818-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0818
Issue date: 2021-03-15

Topic

An update for wpa_supplicant is now available for Red Hat Enterprise Linux8.1 Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory network security security update Red Hat update Red Hat Enterprise Linux important security impact wpa_supplicant use-after-free 802.1X

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS EUS (v. 8.1) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

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

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