OpenSSL FIPS Object Module PRNG implementation security bypass
| openssl-fips-prng-security-bypass (38796) |  Medium Risk |
Description:
OpenSSL FIPS Object Module could allow a remote attacker to bypass security restrictions, caused by an error in the Pseudo Random Number Generator (PRNG) implementation. The key and seed that are used belong with the previous FIPS self-test, which allows more predictable random data to be generated than expected. A remote attacker could exploit this weakness to bypass protection mechanisms that rely on the module.
*CVSS:
| Base Score: | 7.5 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5.5 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Apply patches available from the OpenSSL Security Advisory [29-Nov-2007]. See References.
References:
- OpenSSL Security Advisory [29-Nov-2007]: OpenSSL FIPS Object Module Vulnerabilities.
- BID-26652: OpenSSL FIPS Object Module PRNG Seed Vulnerability
- CVE-2007-5502: The PRNG implementation for the OpenSSL FIPS Object Module 1.1.1 does not perform auto-seeding during the FIPS self-test, which generates random data that is more predictable than expected and makes it easier for attackers to bypass protection mechanisms that rely on the randomness.
- SA27859: OpenSSL FIPS Object Module PRNG Security Issue
- SECTRACK ID: 1019029: OpenSSL FIPS Object Module Self-Test Error Causes the System to Generate More Predictable Pseudo Random Data
- US-CERT VU#150249: OpenSSL FIPS Object Module fails to properly generate random seeds
- VUPEN/ADV-2007-4044: OpenSSL FIPS Object Module PRNG Implementation Security Weakness
Platforms Affected:
- OpenSSL Fips Object Module 1.1.1
Reported:
Nov 29, 2007
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.