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...

CVE-2022-42310

Xenstore: Guests can create orphaned Xenstore nodes By creating multiple nodes inside a transaction resulting in an error, a malicious guest can create orphaned nodes in the Xenstore data base, as the cleanup after the error will not remove all nodes already created. When the transaction is...

CVE-2022-42326

Xenstore: Guests can create arbitrary number of nodes via transactions This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. In case a node has been created in a transaction and it is later deleted in the same transaction, t...

CVE-2022-42310

CVE-2022-42310 – Xenstore corruption in Xen : A bug where creating multiple Xenstore nodes inside a transaction and an error prevents cleanup from removing all nodes. Upon commit, nodes without a valid parent can become permanent in the Xenstore database, enabling persistent orphaned nodes. This ...

Xen 安全漏洞

Xen is an open source virtual machine monitor product from the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports migration at runtime to ensure uptime and avoid downtime. A security vulnerability exists in Xen...

PT-2022-7321 · Xenstore +1 · Xenstore +1

Name of the Vulnerable Software and Affected Versions: Xenstore affected versions not specified Description: The issue is related to the uncontrolled allocation of resources in Xenstore, which can lead to a Denial of Service DoS of xenstored. Malicious guests can cause xenstored to allocate large...

CVE-2022-42323

Xenstore: Cooperating guests can create arbitrary numbers of nodes This 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...

PT-2022-7333 · Xenstore +1 · Xenstore +1

Name of the Vulnerable Software and Affected Versions: Xenstore affected versions not specified Description: The issue is related to the creation of orphaned Xenstore nodes by guests. This occurs when a malicious guest creates multiple nodes inside a transaction, resulting in an error. The cleanu...

CVE-2022-42326

Xenstore: Guests can create arbitrary number of nodes via transactions This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. In case a node has been created in a transaction and it is later deleted in the same transaction, t...

CVE-2022-42322

Xenstore: Cooperating guests can create arbitrary numbers of nodes This 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...

CVE-2022-42322

CVE-2022-42322 concerns Xenstore: cooperating guests can create an arbitrary number of Xenstore nodes. The issue arises after the XSA-322 fix, where any Xenstore node owned by a removed domain can be reassigned to Dom0. A malicious pair of guests can exploit this by: (1) host A lets host B write ...

PT-2022-7319 · Xenstore +1 · Xenstore +1

Name of the Vulnerable Software and Affected Versions: Xenstore affected versions not specified Description: The issue allows guests to create an arbitrary number of nodes via transactions. If a node is created in a transaction and later deleted in the same transaction, the transaction will be...

CVE-2022-42310

Xenstore: Guests can create orphaned Xenstore nodes By creating multiple nodes inside a transaction resulting in an error, a malicious guest can create orphaned nodes in the Xenstore data base, as the cleanup after the error will not remove all nodes already created. When the transaction is...

CVE-2022-42326

CVE-2022-42326 : Xenstore vulnerability in the Xen hypervisor allows a guest to create an arbitrary number of Xenstore nodes when a node is created in a transaction and later deleted in the same transaction; the transaction finalization error can cause partial execution and accounting mismatch. T...

PT-2022-7331 · Xen +1 · Xenstore +1

Name of the Vulnerable Software and Affected Versions: Xenstore affected versions not specified Description: The issue is related to uncontrolled resource allocation in the Xenstore storage of the Xen hypervisor. Exploitation can lead to a denial of service DoS of xenstored. Malicious guests can...

PT-2022-7330 · Xenstore +1 · Xenstore +1

Name of the Vulnerable Software and Affected Versions: Xenstore affected versions not specified Description: The issue is related to the uncontrolled allocation of resources in Xenstore, which can lead to a Denial of Service DoS of xenstored. Malicious guests can cause xenstored to allocate large...

CVE-2022-42325

Xenstore: Guests can create arbitrary number of nodes via transactions This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. In case a node has been created in a transaction and it is later deleted in the same transaction, t...

CVE-2022-42323

CVE-2022-42323 concerns Xenstore in the Xen hypervisor. The issue arises after the XSA-322 fix: any Xenstore node owned by a removed domain is reassigned to Dom0, enabling two cooperating guests to create an unbounded number of Xenstore nodes. This can exhaust Xenstore quota and lead to denial of...

Fodcha DDoS Botnet Resurfaces with New Capabilities

The threat actor behind the Fodcha distributed denial-of-service DDoS botnet has resurfaced with new capabilities, researchers reveal. This includes changes to its communication protocol and the ability to extort cryptocurrency payments in exchange for stopping the DDoS attack against a target,...

Keylime: unhandled exceptions could lead to invalid attestation states

Impact This vulnerability creates a false sense of security for keylime users -- i.e. a user could query keylime and conclude that a parcitular node/agent is correctly attested, while attestations are not in fact taking place. Short explanation: the keylime verifier creates periodic reports on th...