CVE-2023-31355
"Xen UMC Seed Hijacking via Malicious Hypervisor"
Description
Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to overwrite a guest's UMC seed potentially allowing reading of memory from a decommissioned guest.
INFO
Published Date :
Aug. 5, 2024, 4:15 p.m.
Last Modified :
Aug. 6, 2024, 4:30 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.0
Exploitability Score :
1.5
Public PoC/Exploit Available at Github
CVE-2023-31355 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2023-31355
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-31355.
| URL | Resource |
|---|---|
| https://https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3011.html |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Rust
None
Rust
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-31355 vulnerability anywhere in the article.
-
The Register
Raptor Lake microcode limits Intel chips to a mere 1.55 volts to prevent CPU destruction
Intel has divulged more details on its Raptor Lake family of 13th and 14th Gen Core processor failures and the 0x129 microcode that's supposed to prevent further damage from occurring. The chipmaker p ... Read more
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Cyber Security News
AMD Patches Multiple Memory Vulnerabilities That Leads Corrupt The Guest VM
Three potential vulnerabilities in Secure Encrypted Virtualization – Secure Nested Paging (SEV-SNP) could allow an attacker to read or corrupt the memory of a guest VM. To establish an isolated execut ... Read more
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Cybersecurity News
Data Centers Alert: AMD Addresses SEV-SNP Vulnerabilities in EPYC Processors
AMD has released a security bulletin addressing three potential vulnerabilities in its Secure Encrypted Virtualization – Secure Nested Paging (SEV-SNP) technology. Discovered by a researcher, these vu ... Read more
The following table lists the changes that have been made to the
CVE-2023-31355 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Received by [email protected]
Aug. 05, 2024
Action Type Old Value New Value Added Description Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to overwrite a guest's UMC seed potentially allowing reading of memory from a decommissioned guest. Added Reference Advanced Micro Devices Inc. https://https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3011.html [No types assigned] Added CWE Advanced Micro Devices Inc. CWE-119 Added CVSS V3.1 Advanced Micro Devices Inc. AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-31355 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-31355
weaknesses.