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Red Hat 7: RHSA-2021-0808-01 Important: wpa_supplicant Use-After-Free

red hat
Calendar Grey March 10, 2021
Dist Redhat Esm H88
A critical patch for wpa_supplicant on Red Hat Linux 7 has been launched to address security flaws, ensure your safety.
An update for wpa_supplicant is now available for Red Hat Enterprise Linux 7

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 issue Red Hat update important wpa_supplicant important update client authentication use-after-free

References

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

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: wpa_supplicant-2.6-12.el7_9.2.src.rpm
x86_64: wpa_supplicant-2.6-12.el7_9.2.x86_64.rpm wpa_supplicant-debuginfo-2.6-12.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: wpa_supplicant-2.6-12.el7_9.2.src.rpm
x86_64: wpa_supplicant-2.6-12.el7_9.2.x86_64.rpm wpa_supplicant-debuginfo-2.6-12.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: wpa_supplicant-2.6-12.el7_9.2.src.rpm
ppc64: wpa_supplicant-2.6-12.el7_9.2.ppc64.rpm wpa_supplicant-debuginfo-2.6-12.el7_9.2.ppc64.rpm
ppc64le: wpa_supplicant-2.6-12.el7_9.2.ppc64le.rpm wpa_supplicant-debuginfo-2.6-12.el7_9.2.ppc64le.rpm
s390x: wpa_supplicant-2.6-12.el7_9.2.s390x.rpm wpa_supplicant-debuginfo-2.6-12.el7_9.2.s390x.rpm
x86_64: wpa_supplicant-2.6-12.el7_9.2.x86_64.rpm wpa_supplicant-debuginfo-2.6-12.el7_9.2.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: wpa_supplicant-2.6-12.el7_9.2.src.rpm
x86_64: wpa_supplicant-2.6-12.el7_9.2.x86_64.rpm wpa_supplicant-debuginfo-2.6-12.el7_9.2.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-2021:0808-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0808
Issue date: 2021-03-10

Topic

An update for wpa_supplicant is now available for Red Hat Enterprise Linux7.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 issue Red Hat update important wpa_supplicant important update client authentication use-after-free

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Bugs Fixed

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

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