Vulnerability identifier: #VU35125

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-6123

CWE-ID: CWE-20

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.

Chicken before 4.8.0 does not properly handle NUL bytes in certain strings, which allows an attacker to conduct "poisoned NUL byte attack."

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-2012-6123
http://security-tracker.debian.org/tracker/CVE-2012-6123

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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.