CVE-2019-7308

medium
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

kernel/bpf/verifier.c in the Linux kernel before 4.20.6 performs undesirable out-of-bounds speculation on pointer arithmetic in various cases, including cases of different branches with different state or limits to sanitize, leading to side-channel attacks.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=979d63d50c0c0f7bc537bf821e056cc9fe5abd38

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d3bd7413e0ca40b60cf60d4003246d067cafdeda

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html

http://www.securityfocus.com/bid/106827

https://bugs.chromium.org/p/project-zero/issues/detail?id=1711

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.6

https://github.com/torvalds/linux/commit/979d63d50c0c0f7bc537bf821e056cc9fe5abd38

https://github.com/torvalds/linux/commit/d3bd7413e0ca40b60cf60d4003246d067cafdeda

https://support.f5.com/csp/article/K43030517

https://support.f5.com/csp/article/K43030517?utm_source=f5support&utm_medium=RSS

https://usn.ubuntu.com/3930-1/

https://usn.ubuntu.com/3930-2/

https://usn.ubuntu.com/3931-1/

https://usn.ubuntu.com/3931-2/

Details

Source: MITRE

Published: 2019-02-01

Updated: 2019-09-24

Type: CWE-189

Risk Information

CVSS v2

Base Score: 4.7

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

Impact Score: 6.9

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 5.6

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

Impact Score: 4

Exploitability Score: 1.1

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2

OR

cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*

Configuration 3

OR

cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*

Tenable Plugins

View all (15 total)

IDNameProductFamilySeverity
148919Amazon Linux 2 : kernel (ALAS-2021-1627)NessusAmazon Linux Local Security Checks
high
138418Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5755)NessusOracle Linux Local Security Checks
high
124978EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1525)NessusHuawei Local Security Checks
high
124654Amazon Linux AMI : kernel (ALAS-2019-1201)NessusAmazon Linux Local Security Checks
medium
124592Amazon Linux 2 : kernel (ALAS-2019-1201)NessusAmazon Linux Local Security Checks
medium
124050openSUSE Security Update : the Linux Kernel (openSUSE-2019-1193)NessusSuSE Local Security Checks
high
123679Ubuntu 14.04 LTS / 16.04 LTS : linux-hwe, linux-aws-hwe, linux-azure, linux-gcp, linux-oracle (USN-3931-2)NessusUbuntu Local Security Checks
high
123678Ubuntu 18.04 LTS : linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, (USN-3931-1)NessusUbuntu Local Security Checks
high
123677Ubuntu 18.04 LTS : linux-hwe, linux-azure vulnerabilities (USN-3930-2)NessusUbuntu Local Security Checks
high
123676Ubuntu 18.10 : linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-raspi2 (USN-3930-1)NessusUbuntu Local Security Checks
high
123496SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:0784-1)NessusSuSE Local Security Checks
high
123445SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0767-1)NessusSuSE Local Security Checks
high
123413SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2019:0765-1) (Spectre)NessusSuSE Local Security Checks
high
121580Fedora 29 : kernel / kernel-headers (2019-96b31a9602)NessusFedora Local Security Checks
medium
121578Fedora 28 : kernel / kernel-headers (2019-7d3500d712)NessusFedora Local Security Checks
medium