Description
sudo: It was discovered that the default sudo configuration on Red Hat Enterprise Linux and possibly other Linux implementations preserves the value of INPUTRC which could lead to information disclosure. A local user with sudo access to a restricted program that uses readline could use this flaw to read content from specially formatted files with elevated privileges provided by sudo.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | sudo +1 | 1.8.6p7-20.el7 | RHSA-2016:2593 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | sudo +1 | 1.8.6p7-20.el7 | ELSA-2016-2593 |
Advisories 2
- RHSA-2016:2593 Red Hat Security Advisory: sudo security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- ELSA-2016-2593 Low: sudo security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 9, 2016
References
- 92615 vdb-entry
- RHSA-2016:2593 vendor-advisory
- [Bug-readline] 20160524 INPUTRC issues mailing-list