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4.3
CVSSv2

CVE-2020-27949

Published: 02/04/2021 Updated: 08/04/2021
CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8
VMScore: 383
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Vulnerability Summary

This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave. A malicious application may cause unexpected changes in memory belonging to processes traced by DTrace.

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apple mac os x

apple mac os x 10.14.6

apple mac os x 10.15.7

apple macos

Github Repositories

https://github.com/seemoo-lab/dtrace-memaccess_cve-2020-27949

Reading and writing memory of other processes using fasttrap The /dev/fasttrap device for creating trap nodes in user-space processes for the pid and objc providers has the permissions 666 In contrast to /dev/dtrace, which is also 666, fasttrap lacks a permission check This allows any process to issue a FASTTRAPIOC_MAKEPROBE or FASTTRAPIOC_GETINSTR ioctl An attacker can crea

References

NVD-CWE-noinfohttps://support.apple.com/en-us/HT212011https://nvd.nist.govhttps://github.com/seemoo-lab/dtrace-memaccess_cve-2020-27949
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-33228CVE-2024-20361log injectionbypassCVE-2024-4985CVE-2024-35223CVE-2024-29849CVE-2024-31893IMAP
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