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amazonAmazonALAS2-2021-1624
HistoryMar 25, 2021 - 6:31 p.m.

Important: wpa_supplicant

2021-03-2518:31:00
alas.aws.amazon.com
11

7.5 High

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

7.7 High

AI Score

Confidence

High

5.4 Medium

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:A/AC:M/Au:N/C:P/I:P/A:P

0.002 Low

EPSS

Percentile

59.1%

Issue Overview:

A flaw was found in the wpa_supplicant, in the way it processes P2P (Wi-Fi Direct) provision discovery requests. This flaw allows an attacker who is within radio range of the device running P2P discovery to cause termination of the wpa_supplicant process or potentially cause code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-27803)

Affected Packages:

wpa_supplicant

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update wpa_supplicant to update your system.

New Packages:

aarch64:  
    wpa_supplicant-2.6-12.amzn2.2.1.aarch64  
    wpa_supplicant-debuginfo-2.6-12.amzn2.2.1.aarch64  
  
i686:  
    wpa_supplicant-2.6-12.amzn2.2.1.i686  
    wpa_supplicant-debuginfo-2.6-12.amzn2.2.1.i686  
  
src:  
    wpa_supplicant-2.6-12.amzn2.2.1.src  
  
x86_64:  
    wpa_supplicant-2.6-12.amzn2.2.1.x86_64  
    wpa_supplicant-debuginfo-2.6-12.amzn2.2.1.x86_64  

Additional References

Red Hat: CVE-2021-27803

Mitre: CVE-2021-27803

7.5 High

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

7.7 High

AI Score

Confidence

High

5.4 Medium

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:A/AC:M/Au:N/C:P/I:P/A:P

0.002 Low

EPSS

Percentile

59.1%