458 matches found
CVE-2020-29485
An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XSRESETWATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are...
CVE-2020-29479
An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged...
DEBIAN-CVE-2020-29479
An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged...
CVE-2020-29479
An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged...
UBUNTU-CVE-2020-29479
An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged...
Information disclosure
An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XSRESETWATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are...
CVE-2020-29485
An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XSRESETWATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are...
Design/Logic Flaw
An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged...
UBUNTU-CVE-2020-29482
An issue was discovered in Xen through 4.14.x. A guest may access xenstore paths via absolute paths containing a full pathname, or via a relative path, which implicitly includes /local/domain/$DOMID for their own domain id. Management tools must access paths in guests' namespaces, necessarily usi...
CVE-2020-29479
An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged...
UBUNTU-CVE-2020-29483
An issue was discovered in Xen through 4.14.x. Xenstored and guests communicate via a shared memory page using a specific protocol. When a guest violates this protocol, xenstored will drop the connection to that guest. Unfortunately, this is done by just removing the guest from xenstored's intern...
UBUNTU-CVE-2020-29485
An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XSRESETWATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are...
CVE-2020-29485
CVE-2020-29485 concerns Xen 4.6–4.14.x where, on XS_RESET_WATCHES, Xenstored’s tracking information is not fully freed in the Ocaml Xenstored implementation, allowing unbounded memory growth and a system-wide DoS. The vulnerability affects hosts using the Ocaml Xenstored; the C Xenstored implemen...
CVE-2020-29485
An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XSRESETWATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are...
CVE-2020-29482
An issue was discovered in Xen through 4.14.x. A guest may access xenstore paths via absolute paths containing a full pathname, or via a relative path, which implicitly includes /local/domain/$DOMID for their own domain id. Management tools must access paths in guests' namespaces, necessarily usi...
CVE-2020-29479
An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged...
CVE-2020-29479
An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged...
CVE-2020-29479
CVE-2020-29479 affects Xen’s xenstored when using the Ocaml implementation (oxenstored). The root node is treated specially (root has no parent) and permissions checks are missing for certain operations on the root node. This allows unprivileged guests to get and modify root permissions, list and...
oxenstored memory leak in reset_watches
ISSUE DESCRIPTION When acting upon a guest XSRESETWATCHES request, not all tracking information is freed. IMPACT A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. VULNERABLE SYSTEMS All version of Xen since 4.6 are vulnerable. Only systems using the Ocaml...
oxenstored: permissions not checked on root node
ISSUE DESCRIPTION In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged guests can get and modify...