There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific
    extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised
    form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer
    overflow. (CVE-2017-6949)

It was found that CHICKEN did not sanitize the size argument when allocating SRFI-4 vectors, which could lead to segfaults or buffer overflows with some sizes.

For Debian 7 'Wheezy', these problems have been fixed in version 4.7.0-1+deb7u2.

We recommend that you upgrade your chicken packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

CHICKEN reports :

- CVE-2017-6949: Unchecked malloc() call in SRFI-4 constructors when allocating in non-GC memory, resulting in potential 1-word buffer overrun and/or segfault

- CVE-2017-9334: 'length' crashes on improper lists

- CVE-2017-11343: The randomization factor of the symbol table was set before the random seed was set, causing it to have a fixed value on many platforms

Fix for CVE-2017-6949, also bump to 4.12.0

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific     extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised     form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer     overflow. (CVE-2017-6949)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
403804	Alpine: multiple chicken packages: security update to 4.12.0-r3	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	high
400824	Alpine: multiple chicken packages: security update to 4.12.0-r2 (deprecated)	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	8/16/2023	7/2/2026	high
403804	Alpine: multiple chicken packages: security update to 4.12.0-r3	Tenable Cloud Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	high
400824	Alpine: multiple chicken packages: security update to 4.12.0-r2 (deprecated)	Tenable Cloud Security	Alpine Linux Local Security Checks	8/16/2023	7/2/2026	high
99602	Debian DLA-908-1 : chicken security update	Nessus	Debian Local Security Checks	4/24/2017	12/23/2025	high
111655	FreeBSD : chicken -- multiple vulnerabilities (5a771686-9e33-11e8-8b2d-9cf7a8059466)	Nessus	FreeBSD Local Security Checks	8/13/2018	3/26/2025	high
101584	Fedora 26 : chicken (2017-1f3ee3bea6)	Nessus	Fedora Local Security Checks	7/17/2017	12/10/2025	high
100333	Fedora 24 : chicken (2017-947da3daa5)	Nessus	Fedora Local Security Checks	5/23/2017	12/18/2025	high
255057	Linux Distros Unpatched Vulnerability : CVE-2017-6949	Nessus	Misc.	8/25/2025	9/2/2026	high
100335	Fedora 25 : chicken (2017-cc606f1001)	Nessus	Fedora Local Security Checks	5/23/2017	12/18/2025	high

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