PT-2023-30240 · Xen+1 · Xen+1

Michal Orzel · Published 2023-12-12 · Updated 2024-02-15 · CVE-2023-46837

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Xen (affected versions not specified)

Description The issue arises from the arithmetics in the cache cleaning and invalidation helpers overflowing, which can result in skipping the cache cleaning/invalidation. This means there is no guarantee that all writes will reach memory. The problem is related to allocating guest memory and ensuring writes have reached memory before handing over the page to a guest. A malicious guest may be able to read sensitive data from memory that previously belonged to another guest. Only Arm 32-bit systems are vulnerable.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2023-46837

Affected Products

Debian

Xen

References · 17

• https://osv.dev/vulnerability/UBUNTU-CVE-2023-46837 · Vendor Advisory
• https://xenbits.xenproject.org/xsa/advisory-447.html · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/JFVKWYQFRUU3CAS53THTUKXEOUDWI42G · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-46837 · Security Note
• https://osv.dev/vulnerability/CVE-2023-46837 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-46837 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-46837 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-46837 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-46837 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2023-46837 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/XLL6SQ6IKFYXLYWITYZCRV5IBRK5G35R · Vendor Advisory
• https://security.alpinelinux.org/vuln/CVE-2023-46837 · Note
• http://xenbits.xen.org/xsa/advisory-447.html · Note
• https://twitter.com/VulmonFeeds/status/1734554447441801353 · Twitter Post
• https://t.me/cvenotify/71454 · Telegram Post