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CVE-2024-7883

LOWCVSS 3.7/10EPSS 0.48%

Last modified

CVE-2024-7883 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. When using Arm Cortex-M Security Extensions (CMSE), Secure stack contents can be leaked to Non-secure state via floating-point registers when a Secure to Non-secure function call is made that returns a floating-point value and when this is the first use of floating-point since entering Secure state. This allows an attacker to read a limited quantity of Secure stack contents with an impact on confidentiality. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

When using Arm Cortex-M Security Extensions (CMSE), Secure stack contents can be leaked to Non-secure state via floating-point registers when a Secure to Non-secure function call is made that returns a floating-point value and when this is the first use of floating-point since entering Secure state. This allows an attacker to read a limited quantity of Secure stack contents with an impact on confidentiality. This issue is specific to code generated using LLVM-based compilers.

Metrics

CVSS 3.1
3.7/10

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

EPSS Probability
0.48%

37.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ArmArm Compiler For Embedded>= 6.6, < 6.23
ArmArm Compiler For Embedded Fusa6.16
ArmArm Compiler For Embedded Fusa6.21
ArmArm Compiler For Functional Safety6.6
ArmClang>= 11.0.0, < 20.1.0

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2024-7883?
When using Arm Cortex-M Security Extensions (CMSE), Secure stack contents can be leaked to Non-secure state via floating-point registers when a Secure to Non-secure function call is made that returns a floating-point value and when this is the first use of floating-point since entering Secure state. This allows an attacker to read a limited quantity of Secure stack contents with an impact on confidentiality. This issue is specific to code generated using LLVM-based compilers.
How severe is CVE-2024-7883?
CVE-2024-7883 has a CVSS score of 3.7/10 (LOW severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.
How do I fix CVE-2024-7883?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-7883?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST