CVE-2023-20593

Public Exploit

Description

An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 6.03% Top 10%
Vendor Advisory amd.com Vendor Advisory xen.org
Affected: AMD Ryzen™ 3000 Series Desktop Processors “Matisse” AM4
Affected: AMD AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics “Renoir” AM4
Affected: AMD 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT
Affected: AMD Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS SP3
Affected: AMD Ryzen™ 5000 Series Mobile processors with Radeon™ Graphics “Lucienne”
Affected: AMD Ryzen™ 4000 Series Mobile processors with Radeon™ Graphics “Renoir”
Affected: AMD Ryzen™ 7020 Series processors “Mendocino” FT6
Affected: AMD 2nd Gen AMD EPYC™ Processors
Published at:
Updated at:

References

Link Tags
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7008 vendor advisory
http://xenbits.xen.org/xsa/advisory-433.html patch vendor advisory mitigation
http://www.openwall.com/lists/oss-security/2023/07/24/3 mailing list
http://seclists.org/fulldisclosure/2023/Jul/43 not applicable
http://www.openwall.com/lists/oss-security/2023/07/25/5 mailing list
http://www.openwall.com/lists/oss-security/2023/07/25/6 mailing list
http://www.openwall.com/lists/oss-security/2023/07/25/1 mailing list
http://www.openwall.com/lists/oss-security/2023/07/25/13 mailing list
http://www.openwall.com/lists/oss-security/2023/07/25/17 mailing list
http://www.openwall.com/lists/oss-security/2023/07/25/12 mailing list
http://www.openwall.com/lists/oss-security/2023/07/25/16 mailing list
http://www.openwall.com/lists/oss-security/2023/07/25/14 mailing list
http://www.openwall.com/lists/oss-security/2023/07/25/15 mailing list
http://www.openwall.com/lists/oss-security/2023/07/26/1 patch mailing list mitigation third party advisory
https://cmpxchg8b.com/zenbleed.html exploit
https://www.debian.org/security/2023/dsa-5459 third party advisory
https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html mailing list
https://www.debian.org/security/2023/dsa-5462 third party advisory
https://www.debian.org/security/2023/dsa-5461 third party advisory
https://lists.debian.org/debian-lts-announce/2023/07/msg00033.html third party advisory mailing list
http://www.openwall.com/lists/oss-security/2023/07/31/2 patch mailing list mitigation third party advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SD2G74BXS2SWOE3FIQJ6X76S3A7PDGML/
http://www.openwall.com/lists/oss-security/2023/08/08/7
http://www.openwall.com/lists/oss-security/2023/08/08/8
http://www.openwall.com/lists/oss-security/2023/08/08/6
http://www.openwall.com/lists/oss-security/2023/08/16/4
http://www.openwall.com/lists/oss-security/2023/08/16/5
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CP6WQO3CDPLE5O635N7TAL5KCZ6HZ4FE/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HKKYIK2EASDNUV4I7EFJKNBVO3KCKGRR/
http://www.openwall.com/lists/oss-security/2023/09/22/9
http://www.openwall.com/lists/oss-security/2023/09/22/11
http://www.openwall.com/lists/oss-security/2023/09/25/4
http://www.openwall.com/lists/oss-security/2023/09/25/7
https://security.netapp.com/advisory/ntap-20240531-0004/

Frequently Asked Questions

What is the severity of CVE-2023-20593?
CVE-2023-20593 has been scored as a medium severity vulnerability.
How to fix CVE-2023-20593?
To fix CVE-2023-20593, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-20593 being actively exploited in the wild?
It is possible that CVE-2023-20593 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-20593?
CVE-2023-20593 affects AMD Ryzen™ 3000 Series Desktop Processors “Matisse” AM4, AMD AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics “Renoir” AM4, AMD 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT, AMD Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS SP3, AMD Ryzen™ 5000 Series Mobile processors with Radeon™ Graphics “Lucienne”, AMD Ryzen™ 4000 Series Mobile processors with Radeon™ Graphics “Renoir”, AMD Ryzen™ 7020 Series processors “Mendocino” FT6, AMD 2nd Gen AMD EPYC™ Processors.
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