Vulnerability identifier: #VU41652

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-3776

CWE-ID: CWE-119

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 read and manipulate data.

Buffer overflow in the "read-u8vector!" procedure in the srfi-4 unit in CHICKEN stable 4.8.0.7 and development snapshots before 4.9.1 allows remote attackers to cause a denial of service (memory corruption and application crash) and possibly execute arbitrary code via a "#f" value in the NUM argument.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Chicken Scheme: 4.8.0.7

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External links
http://code.call-cc.org/cgi-bin/gitweb.cgi?p=chicken-core.git;a=commit;h=1d06ce7e21c7e903ca5dca11fda6fcf2cc52de5e
http://lists.gnu.org/archive/html/chicken-announce/2014-05/msg00001.html
http://lists.gnu.org/archive/html/chicken-hackers/2014-05/msg00032.html
http://seclists.org/oss-sec/2014/q2/328
http://seclists.org/oss-sec/2014/q2/334
http://www.securityfocus.com/bid/67468
http://bugs.call-cc.org/ticket/1124
http://security.gentoo.org/glsa/201612-54

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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.