Medium severity · published Jun 4, 2020
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
5.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QE
Qemu · Qemu
4.0.0 before 5.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-10702
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-10702
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10702
git.qemu.org
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de0b1bae6461f67243282555475f88b2384a1eb9
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200724-0007/
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