CVE-2016-7076

sudo before version 1.8.18p1 is vulnerable to a bypass in the sudo noexec restriction if application run via sudo executed wordexp() C library function with a user supplied argument. A local user permitted to run such application via sudo with noexec restriction could possibly use this flaw to execute arbitrary commands with elevated privileges.

Read the notes from the security team

Status

Show unmaintained releases

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	Ignored end of life
	16.04 LTS xenial	Fixed 1.8.16-0ubuntu1.6
	14.04 LTS trusty	Fixed 1.8.9p5-1ubuntu1.5+esm5 Ubuntu Pro
	12.04 LTS precise	Ignored end of life

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro

Notes

seth-arnold

See also CVE-2016-7032 This alert mentions a seccomp-based filter. If we decide to backport that filter for this CVE, and CVE-2016-7032, then 'medium' may continue to be appropriate. If we decide the seccomp-based filter is not suitable for a backport, then perhaps 'negligible' would be appropriate.

Patch details

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

Package	Patch details
sudo	Upstream: https://www.sudo.ws/repos/sudo/rev/e7d09243e51b Upstream: https://www.sudo.ws/repos/sudo/rev/7b8357b0a358 Upstream: https://www.sudo.ws/repos/sudo/rev/167a518d8129 Upstream: https://www.sudo.ws/repos/sudo/rev/59d76bdc0f0c Upstream: https://www.sudo.ws/repos/sudo/rev/5d88d7cda853 Upstream: https://www.sudo.ws/repos/sudo/rev/120a317ce25b

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Cvss 3 Severity Score

Status

Get expanded security coverage with Ubuntu Pro

Notes

seth-arnold

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references