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TI-2020-03813 Aliases CVE-2020-4462GHSA-4p7q-hvhp-3r8p

XML external entity injection in IBM Sterling Secure Proxy

Priority MEDIUM 41CWE-611Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

IBM Sterling External Authentication Server 6.0.1, 6.0.0, 2.4.3.2, and 2.4.2 and IBM Sterling Secure Proxy 6.0.1, 6.0.0, 3.4.3, and 3.4.2 are vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 181482.

Why it matters now

EPSS 0.03249 88th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMSterling Secure Proxy3.4.2; 3.4.3; 2.4.3; 2.4.2; 6.0.1; 6.0.0—No fix listedCNA
IBMExternal Authentication Server6.0; 6.0.1—No fix listedCNA
IBMSterling External Authentication Server2.4.2; 2.4.3.2—No fix listedCNA
  • Sterling Secure Proxy VendorIBM Affected 3.4.2; 3.4.3; 2.4.3; 2.4.2; 6.0.1; 6.0.0 Fixed in — No fix listed CNA
  • External Authentication Server VendorIBM Affected 6.0; 6.0.1 Fixed in — No fix listed CNA
  • Sterling External Authentication Server VendorIBM Affected 2.4.2; 2.4.3.2 Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:ibm:sterling_external_authentication_server:2.4.2.0:*:*:*:*:*:*:*2.4.2.0VulnerableIBM
cpe:2.3:a:ibm:sterling_external_authentication_server:2.4.3.2:*:*:*:*:*:*:*2.4.3.2VulnerableIBM
cpe:2.3:a:ibm:sterling_external_authentication_server:6.0.0.0:*:*:*:*:*:*:*6.0.0.0VulnerableIBM
cpe:2.3:a:ibm:sterling_external_authentication_server:6.0.1.0:*:*:*:*:*:*:*6.0.1.0VulnerableIBM
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:*:*:*:*:*:*:*3.4.2.0VulnerableIBM
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.3.0:*:*:*:*:*:*:*3.4.3.0VulnerableIBM
cpe:2.3:a:ibm:sterling_secure_proxy:6.0.0.0:*:*:*:*:*:*:*6.0.0.0VulnerableIBM
cpe:2.3:a:ibm:sterling_secure_proxy:6.0.1.0:*:*:*:*:*:*:*6.0.1.0VulnerableIBM
  • cpe:2.3:a:ibm:sterling_external_authentication_server:2.4.2.0:*:*:*:*:*:*:* Versions 2.4.2.0 Vulnerable ·IBM
  • cpe:2.3:a:ibm:sterling_external_authentication_server:2.4.3.2:*:*:*:*:*:*:* Versions 2.4.3.2 Vulnerable ·IBM
  • cpe:2.3:a:ibm:sterling_external_authentication_server:6.0.0.0:*:*:*:*:*:*:* Versions 6.0.0.0 Vulnerable ·IBM
  • cpe:2.3:a:ibm:sterling_external_authentication_server:6.0.1.0:*:*:*:*:*:*:* Versions 6.0.1.0 Vulnerable ·IBM
  • cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:*:*:*:*:*:*:* Versions 3.4.2.0 Vulnerable ·IBM
  • cpe:2.3:a:ibm:sterling_secure_proxy:3.4.3.0:*:*:*:*:*:*:* Versions 3.4.3.0 Vulnerable ·IBM
  • cpe:2.3:a:ibm:sterling_secure_proxy:6.0.0.0:*:*:*:*:*:*:* Versions 6.0.0.0 Vulnerable ·IBM
  • cpe:2.3:a:ibm:sterling_secure_proxy:6.0.1.0:*:*:*:*:*:*:* Versions 6.0.1.0 Vulnerable ·IBM

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-4462
  2. 2026-10-03 Alias added: GHSA-4p7q-hvhp-3r8p

References

Advisory 2

  • TI-2022-06664 Memory leak in IBM Sterling Secure Proxy CVSS 3.1HIGH 7.5
  • TI-2021-10407 Broken or risky cryptographic algorithm in IBM Sterling Secure Proxy CVSS 3.1HIGH 7.5
  • TI-2021-10406 Broken or risky cryptographic algorithm in IBM Sterling Secure Proxy CVSS 3.1HIGH 7.5
  • TI-2013-00433 OS command injection in IBM Sterling External Authentication Server CVSS 3.1HIGH 7.8
  • TI-2022-06662 Buffer overflow in IBM Sterling Secure Proxy CVSS 3.1MEDIUM 6.5
  • TI-2023-15631 IBM Sterling Secure Proxy information disclosure CVSS 3.1MEDIUM 5.5
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences