5.5 CVE-2022-42322

Patch

 

Xenstore: Cooperating guests can create arbitrary numbers of nodes T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Since the fix of XSA-322 any Xenstore node owned by a removed domain will be modified to be owned by Dom0. This will allow two malicious guests working together to create an arbitrary number of Xenstore nodes. This is possible by domain A letting domain B write into domain A's local Xenstore tree. Domain B can then create many nodes and reboot. The nodes created by domain B will now be owned by Dom0. By repeating this process over and over again an arbitrary number of nodes can be created, as Dom0's number of nodes isn't limited by Xenstore quota.
https://nvd.nist.gov/vuln/detail/CVE-2022-42322

Categories

CWE-401 : Missing Release of Memory after Effective Lifetime
This is often triggered by improper handling of malformed data or unexpectedly interrupted sessions. In some languages, developers are responsible for tracking memory allocation and releasing the memory. If there are no more pointers or references to the memory, then it can no longer be tracked and identified for release.

References

CONFIRM Patch

DEBIAN

DSA-5272
Third Party Advisory

FEDORA

FEDORA-2022-07438e12df
Mailing List Third Party Advisory
FEDORA-2022-99af00f60e
Mailing List Third Party Advisory
FEDORA-2022-9f51d13fa3
Mailing List Third Party Advisory

MISC Patch

_MLIST Patch


 

CPE

cpe start end
Configuration 1
cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*
Configuration 2
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

Patch

Url
http://xenbits.xen.org/xsa/advisory-419.html
https://xenbits.xenproject.org/xsa/advisory-419.txt
[oss-security] 20221101 Xen Security Advisory 419 v2 (CVE-2022-42322,CVE-2022-42323) - Xenstore: Cooperating guests can create arbitrary numbers of nodes

Exploits

Exploit-db.com
id description date
No known exploits
Other (github, ...)
Url
No known exploits

CAPEC

id description severity
No entry

Sherlock® flash

Take a picture of your computer network in a few clicks !

The Sherlock® flash audit solution allows you to perform an audit to strengthen the security of your IT assets. Vulnerability analysis of your physical and virtual equipment. Patch planning by priority level and time available. Detailed and intuitive reporting.

Discover this offer

Sherlock® flash: 1st instant cybersecurity audit solution