5.5 CVE-2022-42323
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-2022-42323
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
| http://xenbits.xen.org/xsa/advisory-419.html Patch Vendor Advisory |
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
| https://xenbits.xenproject.org/xsa/advisory-419.txt Patch Vendor Advisory |
_MLIST Patch
| [oss-security] 20221101 Xen Security Advisory 419 v2 (CVE-2022-42322,CVE-2022-42323) - Xenstore: Cooperating guests can create arbitrary numbers of nodes Mailing List Patch Third Party Advisory |
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
Exploits
Exploit-db.com
| id | description | date | |
|---|---|---|---|
| No known exploits | |||
Other (github, ...)
| Url |
|---|
| No known exploits |
CAPEC
| id | description | severity |
|---|---|---|
| No entry | ||
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