CVE-2016-7916

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

Race condition in the environ_read function in fs/proc/base.c in the Linux kernel before 4.5.4 allows local users to obtain sensitive information from kernel memory by reading a /proc/*/environ file during a process-setup time interval in which environment-variable copying is incomplete.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8148a73c9901a8794a50f950083c00ccf97d43b3

http://source.android.com/security/bulletin/2016-11-01.html

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4

http://www.securityfocus.com/bid/94138

http://www.ubuntu.com/usn/USN-3159-1

http://www.ubuntu.com/usn/USN-3159-2

https://bugzilla.kernel.org/show_bug.cgi?id=116461

https://forums.grsecurity.net/viewtopic.php?f=3&t=4363

https://github.com/torvalds/linux/commit/8148a73c9901a8794a50f950083c00ccf97d43b3

Details

Source: MITRE

Published: 2016-11-16

Updated: 2017-01-18

Type: CWE-362

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: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.5.3 (inclusive)

Tenable Plugins

View all (10 total)

IDNameProductFamilySeverity
124981EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1528)NessusHuawei Local Security Checks
high
124819EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1496)NessusHuawei Local Security Checks
critical
99846EulerOS 2.0 SP1 : kernel (EulerOS-SA-2016-1089)NessusHuawei Local Security Checks
high
97297SUSE SLES11 Security Update : kernel (SUSE-SU-2017:0494-1)NessusSuSE Local Security Checks
critical
97097SUSE SLES11 Security Update : kernel (SUSE-SU-2017:0437-1)NessusSuSE Local Security Checks
critical
96903SUSE SLES11 Security Update : kernel (SUSE-SU-2017:0333-1)NessusSuSE Local Security Checks
critical
95994Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-3160-2)NessusUbuntu Local Security Checks
medium
95993Ubuntu 14.04 LTS : linux vulnerabilities (USN-3160-1)NessusUbuntu Local Security Checks
medium
95992Ubuntu 12.04 LTS : linux vulnerability (USN-3159-1)NessusUbuntu Local Security Checks
medium
95705openSUSE Security Update : the Linux Kernel (openSUSE-2016-1431)NessusSuSE Local Security Checks
critical