Medium severity · published Aug 8, 2023
CVE-2023-20569
A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction
4.7
CVSS
7.3%
EPSS
No
On KEV
Description
A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disclosure.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)7.3% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0; 11.0; 12.0 · source: NVD
FE
Fedora · Fedoraproject
37; 38 · source: NVD
R3
Ryzen 3 5100 Firmware · Amd
before comboam4v2pi_1.2.0.b · source: NVD
R3
Ryzen 3 5300g Firmware · Amd
before comboam4v2pi_1.2.0.b · source: NVD
R3
Ryzen 3 5300ge Firmware · Amd
before comboam4v2pi_1.2.0.b · source: NVD
R3
Ryzen 3 5300u Firmware · Amd
before cezannepi-fp6_1.0.0.fa · source: NVD
R3
Ryzen 3 5425u Firmware · Amd
before cezannepi-fp6_1.0.0.fa · source: NVD
R5
Ryzen 5 5500 Firmware · Amd
before comboam4v2pi_1.2.0.b · source: NVD
R5
Ryzen 5 5500u Firmware · Amd
before cezannepi-fp6_1.0.0.fa · source: NVD
R5
Ryzen 5 5560u Firmware · Amd
before cezannepi-fp6_1.0.0.fa · source: NVD
R5
Ryzen 5 5600 Firmware · Amd
before comboam4v2pi_1.2.0.b · source: NVD
R5
Ryzen 5 5600g Firmware · Amd
before comboam4v2pi_1.2.0.b · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-20569
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-20569
Mailing List
http://www.openwall.com/lists/oss-security/2023/08/08/4
Third Party Advisory
http://xenbits.xen.org/xsa/advisory-434.html
Exploit
https://comsec.ethz.ch/research/microarch/inception/
Mailing List
https://lists.debian.org/debian-lts-announce/2023/08/msg00013.html
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HKKYIK2EASDNUV4I7EFJKNBVO3KCKGRR/
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L4E4TZNMLYL2KETY23IPA43QXFAVJ46V/
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