CVE-2017-17643: FS Lynda Clone 1.0 has SQL Injection via the keywords parameter to tutorial/.

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2017-17643 is a critical-severity flaw (CVSS 9.8) affecting lynda clone. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FS Lynda Clone 1.0 has SQL Injection via the keywords parameter to tutorial/.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.0% (top 13%)
CISA exploited list	No
Weakness	CWE-89
Published	2017-12-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: lynda clone project

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

Am I affected?

Timeline

2017-12-18 09:29 UTCPublished CVE record published
2026-06-17 01:11 UTCUpdated Record last modified

lynda clone project lynda clone DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy lynda-clone || rpm -q lynda-clone || lynda-clone --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison lynda-clone sudo apt install lynda-clone=<VERSION_BEFORE_1.0> sudo apt-mark hold lynda-clone

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

dnf --showduplicates list lynda-clone sudo dnf downgrade lynda-clone-<VERSION_BEFORE_1.0> sudo dnf versionlock add lynda-clone

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: FS Lynda Clone 1.0 - SQL Injection

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-2017-17643?

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

Is CVE-2017-17643 being exploited?

CVE-2017-17643 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-2017-17643 affect?

CVE-2017-17643 affects lynda clone. Severity is critical (CVSS 9.8). FS Lynda Clone 1.0 has SQL Injection via the keywords parameter to tutorial/.

How urgent is CVE-2017-17643?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2017-17904 MEDIUM 5.4 DOWNGRADE FS Lynda Clone has XSS via the keywords parameter to tutorial/ or the edit_profile_first_name parameter to use
CVE-2017-17903 HIGH 8.8 DOWNGRADE FS Lynda Clone has CSRF via user/edit_profile, as demonstrated by adding content to the user panel.

References

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