CVE-2011-0228
The Data Security component in Apple iOS before 4.2.10 and 4.3.x before 4.3.5 does not check the basicConstraints parameter during validation of X.509...
- Published
- Aug 29, 2011
- Updated
- Aug 6, 2024
- Assigning CNA
- apple
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:PLow · next 30 days
- Percentile
- 93.4%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
The Data Security component in Apple iOS before 4.2.10 and 4.3.x before 4.3.5 does not check the basicConstraints parameter during validation of X.509 certificate chains, which allows man-in-the-middle attackers to spoof an SSL server by using a non-CA certificate to sign a certificate for an arbitrary domain.
Sources
2- isslfixPatch
CVE-2011-0228 fix for older idevices/firmwares
- TWSL2011-007_iOS_code_workaroundResearch
Workaround for the vulnerability identified by TWSL2011-007 or CVE-2008-0228 - iOS x509 Certificate Chain Validation Vulnerability
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