CVE-2022-23960

moderate-risk
Published 2022-03-13

Certain Arm Cortex and Neoverse processors through 2022-03-08 do not properly restrict cache speculation, aka Spectre-BHB. An attacker can leverage the shared branch history in the Branch History Buffer (BHB) to influence mispredicted branches. Then, cache allocation can allow the attacker to obtain sensitive information.

Do I need to act?

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0.19% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.6/10 Medium
LOCAL / HIGH complexity

Affected Products (20)

Xen
Cortex-A57 Firmware
Cortex-A65 Firmware
Cortex-A65Ae Firmware
Cortex-A710 Firmware
Cortex-A72 Firmware
Cortex-A73 Firmware
Cortex-A75 Firmware
Cortex-A76 Firmware
Cortex-A76Ae Firmware
Cortex-A77 Firmware
Cortex-A78 Firmware
Cortex-A78Ae Firmware
Cortex-X1 Firmware
Cortex-X2 Firmware
Neoverse-E1 Firmware
Neoverse-V1 Firmware

Affected Vendors

Debian Xen Arm

References (10)

Mailing List http://www.openwall.com/lists/oss-security/2022/03/18/2
Vendor Advisory https://developer.arm.com/support/arm-security-updates
Mitigation https://developer.arm.com/support/arm-security-updates/speculative-processor-vul...
Mailing List https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
Third Party Advisory https://www.debian.org/security/2022/dsa-5173
Mailing List http://www.openwall.com/lists/oss-security/2022/03/18/2
Vendor Advisory https://developer.arm.com/support/arm-security-updates
Mitigation https://developer.arm.com/support/arm-security-updates/speculative-processor-vul...
Mailing List https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
Third Party Advisory https://www.debian.org/security/2022/dsa-5173
37
/ 100
moderate-risk
Severity 15/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 21/34 · High