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XEN : Security Vulnerabilities (CVSS score >= 9)

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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2017-15597 264 DoS Mem. Corr. +Info 2017-10-30 2018-10-19
9.0
None Remote Low Single system Complete Complete Complete
An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.
2 CVE-2017-10921 264 DoS Mem. Corr. 2017-07-04 2017-11-03
10.0
None Remote Low Not required Complete Complete Complete
The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) or obtain privileged host OS access, aka XSA-224 bug 2.
3 CVE-2017-10920 264 DoS Mem. Corr. 2017-07-04 2017-11-03
10.0
None Remote Low Not required Complete Complete Complete
The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed by only a GNTMAP_host_map unmapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) or obtain privileged host OS access, aka XSA-224 bug 1.
4 CVE-2017-10918 20 2017-07-04 2017-11-03
10.0
None Remote Low Not required Complete Complete Complete
Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to obtain privileged host OS access, aka XSA-222.
5 CVE-2017-10917 476 DoS +Info 2017-07-04 2017-11-03
9.4
None Remote Low Not required Complete None Complete
Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.
6 CVE-2017-10912 19 2017-07-04 2017-11-03
10.0
None Remote Low Not required Complete Complete Complete
Xen through 4.8.x mishandles page transfer, which allows guest OS users to obtain privileged host OS access, aka XSA-217.
7 CVE-2017-2620 125 Exec Code 2018-07-27 2018-09-07
9.0
None Remote Low Single system Complete Complete Complete
Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.
8 CVE-2017-2615 125 Exec Code 2018-07-02 2018-09-07
9.0
None Remote Low Single system Complete Complete Complete
Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host.
Total number of vulnerabilities : 8   Page : 1 (This Page)
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