CVE-2015-7835

HIGH
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Description

The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping.

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html

http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html

http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html

http://support.citrix.com/article/CTX202404

http://www.debian.org/security/2015/dsa-3390

http://www.securityfocus.com/bid/77366

http://www.securitytracker.com/id/1034032

http://xenbits.xen.org/xsa/advisory-148.html

https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-022-2015.txt

https://security.gentoo.org/glsa/201604-03

Details

Source: MITRE

Published: 2015-10-30

Updated: 2018-10-30

Type: CWE-20

Risk Information

CVSS v2

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (25 total)

IDNameProductFamilySeverity
140019OracleVM 3.4 : xen (OVMSA-2020-0039) (Bunker Buster) (Foreshadow) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout) (Meltdown) (POODLE) (Spectre)NessusOracleVM Local Security Checks
critical
111992OracleVM 3.4 : xen (OVMSA-2018-0248) (Bunker Buster) (Foreshadow) (Meltdown) (POODLE) (Spectre)NessusOracleVM Local Security Checks
critical
91756OracleVM 3.2 : xen (OVMSA-2016-0081)NessusOracleVM Local Security Checks
high
90380GLSA-201604-03 : Xen: Multiple vulnerabilities (Venom)NessusGentoo Local Security Checks
critical
89359Fedora 23 : xen-4.5.1-14.fc23 (2015-a931b02be2)NessusFedora Local Security Checks
high
89278Fedora 22 : xen-4.5.1-14.fc22 (2015-6f6b79efe2)NessusFedora Local Security Checks
high
89177Fedora 21 : xen-4.4.3-7.fc21 (2015-242be2c240)NessusFedora Local Security Checks
high
87650SUSE SLED11 / SLES11 Security Update : xen (SUSE-SU-2015:2338-1)NessusSuSE Local Security Checks
high
87591SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2015:2328-1)NessusSuSE Local Security Checks
high
87588SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2015:2324-1)NessusSuSE Local Security Checks
high
87443openSUSE Security Update : xen (openSUSE-2015-893)NessusSuSE Local Security Checks
high
87393openSUSE Security Update : xen (openSUSE-2015-892)NessusSuSE Local Security Checks
medium
87273OracleVM 2.2 : xen (OVMSA-2015-0151)NessusOracleVM Local Security Checks
high
86961openSUSE Security Update : xen (openSUSE-2015-730)NessusSuSE Local Security Checks
high
86909openSUSE Security Update : xen (openSUSE-2015-750)NessusSuSE Local Security Checks
medium
86865SUSE SLES11 Security Update : xen (SUSE-SU-2015:1952-1)NessusSuSE Local Security Checks
medium
86863openSUSE Security Update : xen (openSUSE-2015-729)NessusSuSE Local Security Checks
medium
86836FreeBSD : xen-kernel -- Uncontrolled creation of large page mappings by PV guests (3d9f6260-881d-11e5-ab94-002590263bf5)NessusFreeBSD Local Security Checks
high
86802OracleVM 3.2 : xen (OVMSA-2015-0143)NessusOracleVM Local Security Checks
high
86756SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2015:1908-1)NessusSuSE Local Security Checks
medium
86753SUSE SLED11 / SLES11 Security Update : xen (SUSE-SU-2015:1894-1)NessusSuSE Local Security Checks
medium
86704SUSE SLED11 / SLES11 Security Update : xen (SUSE-SU-2015:1853-1)NessusSuSE Local Security Checks
medium
86700Debian DSA-3390-1 : xen - security updateNessusDebian Local Security Checks
high
86670OracleVM 3.2 : xen (OVMSA-2015-0142)NessusOracleVM Local Security Checks
high
86669OracleVM 3.3 : xen (OVMSA-2015-0141)NessusOracleVM Local Security Checks
high