Vulnerability identifier: #VU35126

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-6124

CWE-ID: CWE-338

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Chicken Scheme
Universal components / Libraries / Software for developers

Vendor: call-cc.org

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

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)."

Mitigation
Install update from vendor's website.

Vulnerable software versions

Chicken Scheme: 4.0.0 - 4.7.0

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External links
http://www.openwall.com/lists/oss-security/2013/02/08/2
http://access.redhat.com/security/cve/cve-2012-6124
http://lists.nongnu.org/archive/html/chicken-hackers/2012-02/msg00084.html
http://security-tracker.debian.org/tracker/CVE-2012-6124

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.