Vulnerability CVE-2011-4574


Published: 2021-10-27

Description:
PolarSSL versions prior to v1.1 use the HAVEGE random number generation algorithm. At its heart, this uses timing information based on the processor's high resolution timer (the RDTSC instruction). This instruction can be virtualized, and some virtual machine hosts have chosen to disable this instruction, returning 0s or predictable results.

Type:

CWE-338

(Use of Cryptographically Weak PRNG)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Polarssl -> Polarssl 

 References:
https://tls.mbed.org/tech-updates/security-advisories/polarssl-security-advisory-2011-02

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