Call-Cc: >> Chicken >> 4.8.2 Security Vulnerabilities
OS command injection vulnerability in the "qs" procedure from the "utils" module in Chicken before 4.9.0.
CVSS Score
8.8
EPSS Score
0.03
Published
2019-10-31
Due to an incomplete fix for CVE-2012-6125, all versions of CHICKEN Scheme up to and including 4.12.0 are vulnerable to an algorithmic complexity attack. An attacker can provide crafted input which, when inserted into the symbol table, will result in O(n) lookup time.
CVSS Score
7.5
EPSS Score
0.002
Published
2017-07-17
An incorrect "pair?" check in the Scheme "length" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls "length" on it.
CVSS Score
7.5
EPSS Score
0.004
Published
2017-06-01
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).
CVSS Score
9.8
EPSS Score
0.005
Published
2017-01-10
The "process-execute" and "process-spawn" procedures did not free memory correctly when the execve() call failed, resulting in a memory leak. This could be abused by an attacker to cause resource exhaustion or a denial of service. 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).
CVSS Score
7.5
EPSS Score
0.005
Published
2017-01-10