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CVE-2020-10702

Description

A flaw was found in QEMU in the implementation of the Pointer Authentication (PAuth) support for ARM introduced in version 4.0 and fixed in version 5.0.0. A general failure of the signature generation process caused every PAuth-enforced pointer to be signed with the same signature. A local attacker could obtain the signature of a protected pointer and abuse this flaw to bypass PAuth protection for all programs running on QEMU.

Risk Information

Base Score
5.5
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS Score
Exploitation Probability
0.036

Associated Vulnerability

VulnerabilityOS Platform
Machine emulator and virtualizer (USN-4372-1) qemu_4.2-3ubuntu6.1_amd64.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu_4.0+dfsg-0ubuntu9.6_i386.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu_4.0+dfsg-0ubuntu9.6_amd64.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu_2.11+dfsg-1ubuntu7.26_i386.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu_2.11+dfsg-1ubuntu7.26_amd64.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu_2.5+dfsg-5ubuntu10.44_i386.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu_2.5+dfsg-5ubuntu10.44_amd64.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu-system_4.2-3ubuntu6.1_amd64.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu-system_4.0+dfsg-0ubuntu9.6_i386.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu-system_4.0+dfsg-0ubuntu9.6_amd64.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu-system_2.11+dfsg-1ubuntu7.26_i386.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu-system_2.11+dfsg-1ubuntu7.26_amd64.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu-system_2.5+dfsg-5ubuntu10.44_i386.debLinux
Machine emulator and virtualizer (USN-4372-1) qemu-system_2.5+dfsg-5ubuntu10.44_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234