CVE-2012-6124 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Severity

53%

Complexity

39%

Confidentiality

23%

A casting error in Chicken before 4.8.0 on 64-bit platform caused the random number generator to return a constant value. NOTE: the vendor states "This function wasn't used for security purposes (and is advertised as being unsuitable)."

A casting error in Chicken before 4.8.0 on 64-bit platform caused the random number generator to return a constant value. NOTE: the vendor states "This function wasn't used for security purposes (and is advertised as being unsuitable)."

CVSS 3.1 Base Score 5.3. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N).

Demo Examples

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

CWE-338

Both of these examples use a statistical PRNG to generate a random number:


               
int accountID = random.nextInt();

               
int randNum = rand();

The random number functions used in these examples, rand() and Random.nextInt(), are not considered cryptographically strong. An attacker may be able to predict the random numbers generated by these functions. Note that these example also exhibit CWE-337 (Predictable Seed in PRNG).

Overview

First reported 5 years ago

2019-10-31 21:15:00

Last updated 5 years ago

2019-11-06 15:42:00

Affected Software

call-cc CHICKEN on X64

References

http://www.openwall.com/lists/oss-security/2013/02/08/2

Mailing List, Patch, Third Party Advisory

https://access.redhat.com/security/cve/cve-2012-6124

Broken Link

https://lists.nongnu.org/archive/html/chicken-hackers/2012-02/msg00084.html

Mailing List, Patch, Third Party Advisory

https://security-tracker.debian.org/tracker/CVE-2012-6124

Third Party Advisory

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