CVE-2016-7032

Publication date 14 April 2017

Last updated 25 August 2025

Ubuntu priority

Negligible

Why this priority?

Cvss 3 Severity Score

7.0 · High

Score breakdown

Description

sudo_noexec.so in Sudo before 1.8.15 on Linux might allow local users to bypass intended noexec command restrictions via an application that calls the (1) system or (2) popen function.

Read the notes from the security team

Status

Package Ubuntu Release Status
sudo 21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Not affected
17.10 artful
Not affected
17.04 zesty
Not affected
16.10 yakkety
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Fixed 1.8.9p5-1ubuntu1.5+esm5
12.04 LTS precise Ignored end of life

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Notes

seth-arnold

I'm marking this negligible because this feature seems doomed to failure in the general case. Any sort of memory-protection flaws in the target process, or ability to execute system calls directly, or programs that don't use the standard C libraries, etc. won't be affected by this feature. If you rely upon this feature I suggest instead seccomp2-based filters to disable the execve() and execveat() system calls at the kernel interface or AppArmor (or other MAC system) to restrict which executables can be executed.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
sudo

Severity score breakdown

Parameter Value
Base score 7.0 · High
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3968-3
    • Sudo vulnerabilities
    • 28 September 2020

Other references