CVE-2022-42332
Xen x86 Shadow Plus Log-Dirty Mode Use-After-Free Vulnerability
Description
x86 shadow plus log-dirty mode use-after-free In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Shadow mode maintains a pool of memory used for both shadow page tables as well as auxiliary data structures. To migrate or snapshot guests, Xen additionally runs them in so called log-dirty mode. The data structures needed by the log-dirty tracking are part of aformentioned auxiliary data. In order to keep error handling efforts within reasonable bounds, for operations which may require memory allocations shadow mode logic ensures up front that enough memory is available for the worst case requirements. Unfortunately, while page table memory is properly accounted for on the code path requiring the potential establishing of new shadows, demands by the log-dirty infrastructure were not taken into consideration. As a result, just established shadow page tables could be freed again immediately, while other code is still accessing them on the assumption that they would remain allocated.
INFO
Published Date :
March 21, 2023, 1:15 p.m.
Last Modified :
Feb. 4, 2024, 8:15 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2022-42332
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.
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-2022-42332.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2023/03/21/1 | Mailing List Third Party Advisory |
| http://xenbits.xen.org/xsa/advisory-427.html | Vendor Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202402-07 | |
| https://www.debian.org/security/2023/dsa-5378 | Third Party Advisory |
| https://xenbits.xenproject.org/xsa/advisory-427.txt | Vendor Advisory |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-42332 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-42332 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 Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 04, 2024
Action Type Old Value New Value Added Reference Xen Project https://security.gentoo.org/glsa/202402-07 [No types assigned] -
Initial Analysis by [email protected]
Mar. 27, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2023/03/21/1 No Types Assigned http://www.openwall.com/lists/oss-security/2023/03/21/1 Mailing List, Third Party Advisory Changed Reference Type http://xenbits.xen.org/xsa/advisory-427.html No Types Assigned http://xenbits.xen.org/xsa/advisory-427.html Vendor Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/ Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2023/dsa-5378 No Types Assigned https://www.debian.org/security/2023/dsa-5378 Third Party Advisory Changed Reference Type https://xenbits.xenproject.org/xsa/advisory-427.txt No Types Assigned https://xenbits.xenproject.org/xsa/advisory-427.txt Vendor Advisory Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* versions from (including) 3.2.0 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 27, 2023
Action Type Old Value New Value Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/ [No Types Assigned] Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/ [No Types Assigned] -
CVE Modified by [email protected]
Mar. 26, 2023
Action Type Old Value New Value Added Reference https://www.debian.org/security/2023/dsa-5378 [No Types Assigned] -
CVE Modified by [email protected]
Mar. 26, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/ [No Types Assigned] -
CVE Modified by [email protected]
Mar. 26, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/ [No Types Assigned] -
CVE Modified by [email protected]
Mar. 21, 2023
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2023/03/21/1 [No Types Assigned] Added Reference http://xenbits.xen.org/xsa/advisory-427.html [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-42332 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-2022-42332
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.14257
percentile