CVE-2018-15471

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other products. The Linux netback driver allows frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may cause the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in one or more of privilege escalation, Denial of Service (DoS), or information leaks.

References

http://xenbits.xen.org/xsa/advisory-270.html

https://bugs.chromium.org/p/project-zero/issues/detail?id=1607

https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html

https://usn.ubuntu.com/3819-1/

https://usn.ubuntu.com/3820-1/

https://usn.ubuntu.com/3820-2/

https://usn.ubuntu.com/3820-3/

https://www.debian.org/security/2018/dsa-4313

Details

Source: MITRE

Published: 2018-08-17

Updated: 2020-08-24

Type: CWE-125

Risk Information

CVSS v2

Base Score: 6.8

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

Impact Score: 10

Exploitability Score: 3.1

Severity: MEDIUM

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH

Tenable Plugins

View all (10 total)

IDNameProductFamilySeverity
124970EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1517)NessusHuawei Local Security Checks
high
122879Debian DLA-1715-1 : linux-4.9 security update (Spectre)NessusDebian Local Security Checks
high
122007Photon OS 2.0: Linux PHSA-2018-2.0-0109NessusPhotonOS Local Security Checks
high
120578Fedora 28 : kernel / kernel-headers (2018-8422d94975)NessusFedora Local Security Checks
high
118970Ubuntu 14.04 LTS : Linux kernel (Azure) vulnerabilities (USN-3820-3)NessusUbuntu Local Security Checks
high
118969Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3820-2)NessusUbuntu Local Security Checks
high
118968Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-3820-1)NessusUbuntu Local Security Checks
high
118967Ubuntu 18.10 : Linux kernel vulnerability (USN-3819-1)NessusUbuntu Local Security Checks
high
118023Debian DSA-4313-1 : linux - security updateNessusDebian Local Security Checks
high
112099Fedora 27 : kernel / kernel-headers (2018-79d7c3d2df)NessusFedora Local Security Checks
high