Vulnerability Details CVE-2020-10702
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.9%
CVSS Severity
CVSS v3 Score 5.5
CVSS v2 Score 2.1
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10702
- https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de0b1bae6461f67243282555475f88b2384a1eb9
- https://security.netapp.com/advisory/ntap-20200724-0007/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10702
- https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de0b1bae6461f67243282555475f88b2384a1eb9
- https://security.netapp.com/advisory/ntap-20200724-0007/
Products affected by CVE-2020-10702
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cpe:2.3:a:qemu:qemu:4.0.0
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cpe:2.3:a:qemu:qemu:4.0.1
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cpe:2.3:a:qemu:qemu:4.1.0
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cpe:2.3:a:qemu:qemu:4.1.1
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cpe:2.3:a:qemu:qemu:4.2.0
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cpe:2.3:a:qemu:qemu:4.2.0-34
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cpe:2.3:a:qemu:qemu:4.2.1
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cpe:2.3:a:qemu:qemu:5.0