403 matches found
Xen Hypercall Initialise DoS
The vulnerability of the hypercallinitialise function in Xen hypervisors is related to incorrect error handling for the invalid format symbol. Exploiting this vulnerability can allow a malicious actor to cause service failures...
Xen Denial of Service Vulnerability (XSA-301)
According to its self-reported version number, the Xen Hypervisor installed on the remote host is affected by a denial of service vulnerability due to improper validation of input data. An authenticated, remote attack can exploit this, via a specially crafted hypercall followed by an access to an...
DEBIAN-CVE-2019-18423
An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service via a XENMEMaddtophysmap hypercall. p2m-maxmappedgfn is used by the functions p2mresolvetranslationfault and p2mgetentry to sanity check guest physical frame. The rest of the code in the two...
Design/Logic Flaw
An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service via a XENMEMaddtophysmap hypercall. p2m-maxmappedgfn is used by the functions p2mresolvetranslationfault and p2mgetentry to sanity check guest physical frame. The rest of the code in the two...
CVE-2019-18423
An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service via a XENMEMaddtophysmap hypercall. p2m-maxmappedgfn is used by the functions p2mresolvetranslationfault and p2mgetentry to sanity check guest physical frame. The rest of the code in the two...
CVE-2019-18423
CVE-2019-18423 concerns the Xen hypervisor vulnerability affecting ARM guests via XENMEM_add_to_physmap in Xen 4.12.x and earlier. The issue stems from p2m handling: p2m->max_mapped_gfn is used to sanity-check guest frames in p2m_resolve_translation_fault() and p2m_get_entry(), while p2m_get_r...
CVE-2019-18423
An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service via a XENMEMaddtophysmap hypercall. p2m-maxmappedgfn is used by the functions p2mresolvetranslationfault and p2mgetentry to sanity check guest physical frame. The rest of the code in the two...
CVE-2019-18420
An issue was discovered in Xen through 4.12.x allowing x86 PV guest OS users to cause a denial of service via a VCPUOPinitialise hypercall. hypercallcreatecontinuation is a variadic function which uses a printf-like format string to interpret its parameters. Error handling for a bad format...
CVE-2019-18420
An issue was discovered in Xen through 4.12.x allowing x86 PV guest OS users to cause a denial of service via a VCPUOPinitialise hypercall. hypercallcreatecontinuation is a variadic function which uses a printf-like format string to interpret its parameters. Error handling for a bad format...
VCPUOP_initialise DoS
ISSUE DESCRIPTION hypercallcreatecontinuation is a variadic function which uses a printf-like format string to interpret its parameters. Error handling for a bad format character was done using BUG, which crashes Xen. One path, via the VCPUOPinitialise hypercall, has a bad format character. The B...
PT-2019-4882
Name of the Vulnerable Software and Affected Versions Xen versions 4.6 through 4.12.x Description The issue is related to incorrect error handling for a malformed format character in the hypercall initialise function of the Xen hypervisor. This can be exploited by a remote attacker to cause a...
openSUSE Security Update : xen (openSUSE-2019-1199)
This update for xen fixes the following issues : Security issues fixed : - CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host, resulting in a Denial of Service DoS. XSA-282 bsc1114988 - Fixed an issue which could allow malicious PV guests may cause a host crash or gain...
Stale TLB entry due to page type release race
ISSUE DESCRIPTION x86 PV guests effect TLB flushes by way of a hypercall. Xen tries to reduce the number of TLB flushes by delaying them as much as possible. When the last type reference of a page is dropped, the need for a TLB flush before the page is re-used is recorded. If a guest TLB flush...
CVE-2017-8903
Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213...
DEBIAN-CVE-2017-8903
Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213...
UBUNTU-CVE-2017-8903
Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213...
CVE-2017-8903
Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213...
CVE-2017-8903
Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213...
ALPINE-CVE-2017-8903
Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213...
Code injection
Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213...