CVE-2016-7032
Published: 14 April 2017
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.
Notes
Author | Note |
---|---|
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. |
Priority
Status
Package | Release | Status |
---|---|---|
sudo Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
|
bionic |
Not vulnerable
|
|
cosmic |
Not vulnerable
|
|
disco |
Not vulnerable
|
|
eoan |
Not vulnerable
|
|
focal |
Not vulnerable
|
|
groovy |
Not vulnerable
|
|
hirsute |
Not vulnerable
|
|
precise |
Ignored
(end of life)
|
|
trusty |
Released
(1.8.9p5-1ubuntu1.5+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(1.8.15-1)
|
|
xenial |
Not vulnerable
(1.8.16-0ubuntu1.2)
|
|
yakkety |
Not vulnerable
|
|
zesty |
Not vulnerable
|
|
Patches: upstream: https://www.sudo.ws/repos/sudo/rev/58a5c06b5257 upstream: https://www.sudo.ws/repos/sudo/rev/a826cd7787e9 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.0 |
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
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7032
- https://www.sudo.ws/alerts/noexec_bypass.html
- https://www.sudo.ws/devel.html#1.8.15rc1
- https://www.sudo.ws/repos/sudo/rev/58a5c06b5257
- https://www.sudo.ws/repos/sudo/rev/a826cd7787e9
- https://ubuntu.com/security/notices/USN-3968-3
- NVD
- Launchpad
- Debian