Resource allocation without limits in IBM Secure External Authentication Server
Priority LOW 38CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-770.
Summary
IBM Secure External Authentication Server 2.4.3.2, 6.0.1, 6.0.2 and IBM Secure Proxy 3.4.3.2, 6.0.1, 6.0.2 could allow a remote user to consume resources causing a denial of service due to a resource leak.
Why it matters now
EPSS 0.02937 87th 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | Secure External Authentication Server | 2.4.3.2; 6.0.1; 6.0.2 | — | No fix listed | CNA |
| IBM | Secure Proxy | 6.0.1; 3.4.3.2; 6.0.2 | — | No fix listed | CNA |
- Secure External Authentication Server VendorIBM Affected 2.4.3.2; 6.0.1; 6.0.2 Fixed in — No fix listed CNA
- Secure Proxy VendorIBM Affected 6.0.1; 3.4.3.2; 6.0.2 Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:secure_external_authentication_server:2.4.3.2:*:*:*:*:*:*:* | 2.4.3.2 | Vulnerable | IBM |
| cpe:2.3:a:ibm:secure_external_authentication_server:6.0.1:*:*:*:*:*:*:* | 6.0.1 | Vulnerable | IBM |
| cpe:2.3:a:ibm:secure_external_authentication_server:6.0.2:*:*:*:*:*:*:* | 6.0.2 | Vulnerable | IBM |
| cpe:2.3:a:ibm:sterling_secure_proxy:3.4.3.2:*:*:*:*:*:*:* | 3.4.3.2 | Vulnerable | IBM |
| cpe:2.3:a:ibm:sterling_secure_proxy:6.0.1:*:*:*:*:*:*:* | 6.0.1 | Vulnerable | IBM |
| cpe:2.3:a:ibm:sterling_secure_proxy:6.0.2:*:*:*:*:*:*:* | 6.0.2 | Vulnerable | IBM |
| cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Linux |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:oracle:solaris:-:*:*:*:*:*:-:* | not specified by NVD | Running on | Oracle |
- cpe:2.3:a:ibm:secure_external_authentication_server:2.4.3.2:*:*:*:*:*:*:* Versions 2.4.3.2 Vulnerable ·IBM
- cpe:2.3:a:ibm:secure_external_authentication_server:6.0.1:*:*:*:*:*:*:* Versions 6.0.1 Vulnerable ·IBM
- cpe:2.3:a:ibm:secure_external_authentication_server:6.0.2:*:*:*:*:*:*:* Versions 6.0.2 Vulnerable ·IBM
- cpe:2.3:a:ibm:sterling_secure_proxy:3.4.3.2:*:*:*:*:*:*:* Versions 3.4.3.2 Vulnerable ·IBM
- cpe:2.3:a:ibm:sterling_secure_proxy:6.0.1:*:*:*:*:*:*:* Versions 6.0.1 Vulnerable ·IBM
- cpe:2.3:a:ibm:sterling_secure_proxy:6.0.2:*:*:*:*:*:*:* Versions 6.0.2 Vulnerable ·IBM
- cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:oracle:solaris:-:*:*:*:*:*:-:* Versions not specified by NVD Running on ·Oracle
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-29725
- 2026-10-03 Alias added: GHSA-53qf-272p-ghf6
References
More IBM Secure External Authentication Server vulnerabilities
- TI-2021-10425 Server-side request forgery in IBM Secure Proxy CVSS 3.1MEDIUM 5.4
- TI-2021-10409 Improper certificate validation in IBM Secure External Authentication Server CVSS 3.1MEDIUM 5.3
Sources
- CVE-2021-29725 · CVE Program
- CVE-2021-29725 · NVD
- FIRST EPSS
- GHSA-53qf-272p-ghf6 · GitHub Advisory Database · CC BY 4.0
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