HIGH7.2
Уязвимость гипервизора Xen, позволяющая нарушителю получить доступ к памяти гипервизора
CVSS 2.0HIGH 7.2
CVSS:2.0/AV:L/AC:L/Au:N/C:C/I:C/A:CReferences
Severity:
Closed issues (5)
HIGH7.8
Xen through 4.8.x allows local 64-bit x86 HVM guest OS users to gain privileges by leveraging mishandling of SYSCALL singlestep during emulation.
CVSS 2.0MEDIUM 4.6
CVSS:2.0/AV:L/AC:L/Au:N/C:P/I:P/A:PCVSS 3.xHIGH 7.8
CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HReferences
- http://www.debian.org/security/2017/dsa-3847
- http://www.securityfocus.com/bid/94963
- http://www.securitytracker.com/id/1037491
- http://xenbits.xen.org/xsa/advisory-204.html
- http://www.debian.org/security/2017/dsa-3847
- http://www.securityfocus.com/bid/94963
- http://www.securitytracker.com/id/1037491
- http://xenbits.xen.org/xsa/advisory-204.html
MEDIUM6.0
Xen through 4.8.x allows local x86 PV guest OS kernel administrators to cause a denial of service (host hang or crash) by modifying the instruction stream asynchronously while performing certain kernel operations.
CVSS 2.0MEDIUM 4.9
CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:N/A:CCVSS 3.xMEDIUM 6.0
CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:HReferences
- http://www.debian.org/security/2017/dsa-3847
- http://www.securityfocus.com/bid/95021
- http://www.securitytracker.com/id/1037517
- http://xenbits.xen.org/xsa/advisory-202.html
- https://security.gentoo.org/glsa/201612-56
- https://support.citrix.com/article/CTX219378
- http://www.debian.org/security/2017/dsa-3847
- http://www.securityfocus.com/bid/95021
- http://www.securitytracker.com/id/1037517
- http://xenbits.xen.org/xsa/advisory-202.html
- https://security.gentoo.org/glsa/201612-56
- https://support.citrix.com/article/CTX219378
MEDIUM5.5
VMFUNC emulation in Xen 4.6.x through 4.8.x on x86 systems using AMD virtualization extensions (aka SVM) allows local HVM guest OS users to cause a denial of service (hypervisor crash) by leveraging a missing NULL pointer check.
CVSS 2.0LOW 2.1
CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:N/A:PCVSS 3.xMEDIUM 5.5
CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HReferences
- http://www.securityfocus.com/bid/95026
- http://www.securitytracker.com/id/1037518
- http://xenbits.xen.org/xsa/advisory-203.html
- https://support.citrix.com/article/CTX219378
- http://www.securityfocus.com/bid/95026
- http://www.securitytracker.com/id/1037518
- http://xenbits.xen.org/xsa/advisory-203.html
- https://support.citrix.com/article/CTX219378
HIGH8.2
An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The earlier XSA-29 fix introduced an insufficient check on XENMEM_exchange input, allowing the caller to drive hypervisor memory accesses outside of the guest provided input/output arrays.
CVSS 2.0HIGH 7.2
CVSS:2.0/AV:L/AC:L/Au:N/C:C/I:C/A:CCVSS 3.xHIGH 8.2
CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:HReferences
- http://openwall.com/lists/oss-security/2017/04/04/3
- http://www.debian.org/security/2017/dsa-3847
- http://www.securityfocus.com/bid/97375
- http://www.securitytracker.com/id/1038223
- http://xenbits.xen.org/xsa/advisory-212.html
- https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-029-2017.txt
- https://googleprojectzero.blogspot.com/2017/04/pandavirtualization-exploiting-xen.html
- https://www.exploit-db.com/exploits/41870/
- http://openwall.com/lists/oss-security/2017/04/04/3
- http://www.debian.org/security/2017/dsa-3847
- http://www.securityfocus.com/bid/97375
- http://www.securitytracker.com/id/1038223
- http://xenbits.xen.org/xsa/advisory-212.html
- https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-029-2017.txt
- https://googleprojectzero.blogspot.com/2017/04/pandavirtualization-exploiting-xen.html
- https://www.exploit-db.com/exploits/41870/