Buffer overflow - CVE-2016-6830
Published: January 10, 2017 / Updated: August 4, 2020
Vulnerability identifier: #VU33496
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-6830
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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).
Affected software
chicken (Alpine package)
chicken
Fedora
chicken
Fedora
How to mitigate CVE-2016-6830
Install update from vendor's website.
chicken (Alpine package) - update to 4.11.1-r0
chicken - addressed in versions 4.11.0-3.el6, 4.11.0-3.el7, 4.11.0-3.fc24, 4.11.0-3.fc25, 4.12.0-2.el6, 4.12.0-2.el7
chicken - addressed in versions 4.11.0-3.el6, 4.11.0-3.el7, 4.11.0-3.fc24, 4.11.0-3.fc25, 4.12.0-2.el6, 4.12.0-2.el7