CVE-2017-7488: Authconfig version 6.2.8 is vulnerable to an Information exposure while using SSSD to authenticate against rem

Routine

MEDIUM 4.3DOWNGRADE

CVE-2017-7488 is a medium-severity flaw (CVSS 4.3) affecting authconfig. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Authconfig version 6.2.8 is vulnerable to an Information exposure while using SSSD to authenticate against remote server resulting in the leak of information about existing usernames.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-200
Published	2017-05-16
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: authconfig project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-05-16 18:29 UTCPublished CVE record published
2026-06-17 01:24 UTCUpdated Record last modified

authconfig project authconfig DOWNGRADE

Affected: 6.2.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.2.8

1. Check installed version

apt-cache policy authconfig || rpm -q authconfig || authconfig --version

2. No fixed release: DOWNGRADE to a release before 6.2.8 (Debian / Ubuntu)

apt-cache madison authconfig sudo apt install authconfig=<VERSION_BEFORE_6.2.8> sudo apt-mark hold authconfig

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list authconfig sudo dnf downgrade authconfig-<VERSION_BEFORE_6.2.8> sudo dnf versionlock add authconfig

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-7488?

authconfig: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-7488 being exploited?

CVE-2017-7488 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-7488 affect?

CVE-2017-7488 affects authconfig. Severity is medium (CVSS 4.3). Authconfig version 6.2.8 is vulnerable to an Information exposure while using SSSD to authenticate against remote server resulting in the leak of information about existing usernames.

How urgent is CVE-2017-7488?

Priority 33/100. No elevated risk signals yet.

References

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