CVE-2023-22947: Insecure folder permissions in the Windows installation path of Shibboleth Service Provider (SP) before 3.4.1

Q: How do I fix CVE-2023-22947?

service provider: upgrade to 3.4.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-22947 being exploited?

CVE-2023-22947 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-22947 affect?

CVE-2023-22947 affects service provider. Severity is high (CVSS 7.3). Insecure folder permissions in the Windows installation path of Shibboleth Service Provider (SP) before 3.4.1 allow an unprivileged local attacker to escalate privileges to SYSTEM via DLL planting in the service executable's folder. This oc

Q: How urgent is CVE-2023-22947?

Priority 37/100. High severity; Public exploit reference

Routine

HIGH 7.3UPGRADE

CVE-2023-22947 is a high-severity flaw (CVSS 7.3) affecting service provider. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insecure folder permissions in the Windows installation path of Shibboleth Service Provider (SP) before 3.4.1 allow an unprivileged local attacker to escalate privileges to SYSTEM via DLL planting in the service executable's folder. This occurs because the installation goes under C:\opt (rather than C:\Program Files) by default. NOTE: the vendor disputes the significance of this report, stating that "We consider the ACLs a best effort thing" and

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-427
Published	2023-01-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: shibboleth

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

Am I affected?

Timeline

2023-01-11 02:15 UTCPublished CVE record published
2026-06-17 05:36 UTCUpdated Record last modified

shibboleth service provider UPGRADE

Affected: < 3.4.1

Fixed in: 3.4.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy service-provider || rpm -q service-provider || service-provider --version

2. UPGRADE to 3.4.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade service-provider

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade service-provider

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2023-22947?

service provider: upgrade to 3.4.1. Exact commands for each OS are on this page.

Is CVE-2023-22947 being exploited?

CVE-2023-22947 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-2023-22947 affect?

CVE-2023-22947 affects service provider. Severity is high (CVSS 7.3). Insecure folder permissions in the Windows installation path of Shibboleth Service Provider (SP) before 3.4.1 allow an unprivileged local attacker to escalate privileges to SYSTEM via DLL planting in the service executable's folder. This oc

How urgent is CVE-2023-22947?

Priority 37/100. High severity; Public exploit reference

Software pages

Windows vulnerabilities

References

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