CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 0CVE-2022-42319
https://notcve.org/view.php?id=CVE-2022-42319
Xenstore: Guests can cause Xenstore to not free temporary memory When working on a request of a guest, xenstored might need to allocate quite large amounts of memory temporarily. This memory is freed only after the request has been finished completely. A request is regarded to be finished only after the guest has read the response message of the request from the ring page. Thus a guest not reading the response can cause xenstored to not free the temporary memory. This can result in memory shortages causing Denial of Service (DoS) of xenstored. • http://www.openwall.com/lists/oss-security/2022/11/01/6 http://xenbits.xen.org/xsa/advisory-416.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ https://security.gentoo.org/glsa/202402-07 https:// • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2022-42322
https://notcve.org/view.php?id=CVE-2022-42322
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. • http://www.openwall.com/lists/oss-security/2022/11/01/9 http://xenbits.xen.org/xsa/advisory-419.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ https://security.gentoo.org/glsa/202402-07 https:// • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 7.1EPSS: 0%CPEs: 3EXPL: 0CVE-2022-42327
https://notcve.org/view.php?id=CVE-2022-42327
x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode. Access to this shared page bypasses the expected isolation that should exist between two guests. x86: intercambio de memoria no deseado entre invitados En los sistemas Intel que admiten la función "virtualizar accesos APIC", un invitado puede leer y escribir la página xAPIC compartida global sacando el APIC local del modo xAPIC. El acceso a esta página compartida evita el aislamiento esperado que debería existir entre dos invitados. • http://www.openwall.com/lists/oss-security/2022/11/01/3 http://xenbits.xen.org/xsa/advisory-412.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ https://security.gentoo.org/glsa/202402-07 https://xenbits.xenproject.org/xsa/advisory-412.txt •
CVSS: 7.0EPSS: 0%CPEs: 5EXPL: 0CVE-2022-42320
https://notcve.org/view.php?id=CVE-2022-42320
Xenstore: Guests can get access to Xenstore nodes of deleted domains Access rights of Xenstore nodes are per domid. When a domain is gone, there might be Xenstore nodes left with access rights containing the domid of the removed domain. This is normally no problem, as those access right entries will be corrected when such a node is written later. There is a small time window when a new domain is created, where the access rights of a past domain with the same domid as the new one will be regarded to be still valid, leading to the new domain being able to get access to a node which was meant to be accessible by the removed domain. For this to happen another domain needs to write the node before the newly created domain is being introduced to Xenstore by dom0. • http://www.openwall.com/lists/oss-security/2022/11/01/7 http://xenbits.xen.org/xsa/advisory-417.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ https://security.gentoo.org/glsa/202402-07 https:// • CWE-459: Incomplete Cleanup •
CVSS: 8.8EPSS: 0%CPEs: 5EXPL: 0CVE-2022-42309
https://notcve.org/view.php?id=CVE-2022-42309
Xenstore: Guests can crash xenstored Due to a bug in the fix of XSA-115 a malicious guest can cause xenstored to use a wrong pointer during node creation in an error path, resulting in a crash of xenstored or a memory corruption in xenstored causing further damage. Entering the error path can be controlled by the guest e.g. by exceeding the quota value of maximum nodes per domain. Xenstore: Los invitados pueden bloquear xenstored Debido a un error en la solución de XSA-115, un invitado malintencionado puede hacer que xenstored use un puntero incorrecto durante la creación del nodo en una ruta de error, lo que resulta en una falla de xenstored o una corrupción de la memoria en xenstored, lo que provoca más daño. El invitado puede controlar el ingreso de la ruta de error, por ejemplo, excediendo el valor de cuota de nodos máximos por dominio. • http://www.openwall.com/lists/oss-security/2022/11/01/4 http://xenbits.xen.org/xsa/advisory-414.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ https://security.gentoo.org/glsa/202402-07 https:// • CWE-763: Release of Invalid Pointer or Reference •