Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-24587

Severity CVSS v4.0:
Pending analysis
Type:
CWE-327 Use of a Broken or Risky Cryptographic Algorithm
Publication date:
11/05/2021
Last modified:
01/04/2023

Description

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed.

Impact

Vector 3.x
CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 2.60 LOW
Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x
2.60
Severity 3.x
LOW
Vector 2.0
AV:A/AC:H/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 1.80 LOW
Vector: AV:A/AC:H/Au:N/C:P/I:N/A:N

Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
1.80
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:ieee:ieee_802.11:*:*:*:*:*:*:*:*
cpe:2.3:a:linux:mac80211:-:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-100_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:c-100:-:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-110_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:c-110:-:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-120_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:c-120:-:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-130_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:c-130:-:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-200_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:c-200:-:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-230_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:c-230:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools