CVE-2017-17563

HIGH
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Description

An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode.

References

http://www.openwall.com/lists/oss-security/2017/12/12/2

http://www.securityfocus.com/bid/102169

http://www.securitytracker.com/id/1040769

https://lists.debian.org/debian-lts-announce/2018/01/msg00003.html

https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html

https://security.gentoo.org/glsa/201801-14

https://support.citrix.com/article/CTX232096

https://www.debian.org/security/2018/dsa-4112

https://xenbits.xen.org/xsa/advisory-249.html

Details

Source: MITRE

Published: 2017-12-12

Updated: 2018-10-19

Type: CWE-119

Risk Information

CVSS v2

Base Score: 6.9

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

Impact Score: 10

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Impact Score: 6

Exploitability Score: 1.1

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions up to 4.9.1 (inclusive)

Tenable Plugins

View all (21 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
118215Debian DLA-1549-1 : xen security updateNessusDebian Local Security Checks
critical
111992OracleVM 3.4 : xen (OVMSA-2018-0248) (Bunker Buster) (Foreshadow) (Meltdown) (POODLE) (Spectre)NessusOracleVM Local Security Checks
critical
110305OracleVM 3.2 : xen (OVMSA-2018-0225)NessusOracleVM Local Security Checks
high
110110OracleVM 3.3 : xen (OVMSA-2018-0224) (Meltdown) (Spectre)NessusOracleVM Local Security Checks
high
109545OracleVM 3.4 : xen (OVMSA-2018-0039)NessusOracleVM Local Security Checks
high
108886Citrix XenServer Multiple Vulnerabilities (CTX232096)NessusMisc.
high
108369SUSE SLES11 Security Update : xen (SUSE-SU-2018:0678-1) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
107254SUSE SLES11 Security Update : xen (SUSE-SU-2018:0638-1) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
107144SUSE SLES12 Security Update : xen (SUSE-SU-2018:0609-1) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
107140SUSE SLES12 Security Update : xen (SUSE-SU-2018:0601-1) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
106901SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:0472-1) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
106864openSUSE Security Update : xen (openSUSE-2018-169) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
106834SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:0438-1) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
106820Debian DSA-4112-1 : xen - security updateNessusDebian Local Security Checks
high
106038GLSA-201801-14 : Xen: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
105882Fedora 27 : xen (2017-5945560816)NessusFedora Local Security Checks
high
105621Debian DLA-1230-1 : xen security updateNessusDebian Local Security Checks
high
105617Citrix XenServer Multiple Vulnerabilities (CTX231390) (Meltdown)(Spectre)NessusMisc.
high
105511Fedora 26 : xen (2017-16a414b3c5)NessusFedora Local Security Checks
high
105491Xen Function Page Use Shadow Mode Reference Counting Improper Overflow Check Guest-to-Host DoS (XSA-249)NessusMisc.
high