PT-2023-29649 · Saml · Saml

Anaximand3R · Published 2023-10-16 · Updated 2025-01-17 · CVE-2023-45683

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions github.com/crewjam/saml versions prior to 0.4.14

Description The package does not validate the ACS Location URI according to the SAML binding being parsed. If abused, this flaw allows attackers to register malicious Service Providers at the IdP and inject Javascript in the ACS endpoint definition, achieving Cross-Site-Scripting (XSS) in the IdP context during the redirection at the end of a SAML SSO Flow. Consequently, an attacker may perform any authenticated action as the victim once the victim’s browser loaded the SAML IdP initiated SSO link for the malicious service provider. Note that SP registration is commonly an unrestricted operation in IdPs, hence not requiring particular permissions or publicly accessible to ease the IdP interoperability.

Recommendations For versions prior to 0.4.14, update to version 0.4.14 to fix the issue. As a temporary workaround, consider performing external validation of URLs provided in SAML metadata, or restrict the ability for end-users to upload arbitrary metadata.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2023-45683

GHSA-267V-3V32-G6Q5

GO-2023-2114

OPENSUSE-SU-2025:14663-1

Affected Products

Saml

References · 45

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45683.json · Exploit
• https://github.com/crewjam/saml/commit/b07b16cf83c4171d16da4d85608cb827f183cd79 · Patch
• https://github.com/crewjam/saml/security/advisories/GHSA-267v-3v32-g6q5 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2023-2114 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-45683 · Security Note
• https://ubuntu.com/security/CVE-2023-45683 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-45683 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2025:14663-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-45683 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-45683 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-267v-3v32-g6q5 · Vendor Advisory
• https://github.com/crewjam/saml · Note
• https://suse.com/security/cve/CVE-2024-48948 · Note
• https://suse.com/security/cve/CVE-2023-45683 · Note
• https://t.me/cibsecurity/72333 · Telegram Post