Buffer overflow in Call-Cc Chicken
CVE-2016-6830
The "process-execute" and "process-spawn" procedures in CHICKEN Scheme used fixed-size buffers for holding the arguments and environment variables to use in its execve() call. This would allow user-supplied argument/environment variable lists to trigger a buffer overrun. This affects all releases of CHICKEN up to and including 4.11 (it will be fixed in 4.12 and 5.0, which are not yet released).
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (81.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.securityfocus.com/bid/92550 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.nongnu.org/archive/html/chicken-announce/2016-08/msg00001.html (Vendor Advisory, mailing-list, Patch)
Frequently asked questions
- What is CVE-2016-6830?
- CVE-2016-6830 is a critical-severity vulnerability in Call-Cc Chicken, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-01-10.
- How severe is CVE-2016-6830?
- Critical severity. CVSS v3 base score is 9.8 out of 10.