Call-Cc: >> Chicken >> 3.3.0 Security Vulnerabilities
Multiple buffer overflows in the (1) R5RS char-ready, (2) tcp-accept-ready, and (3) file-select procedures in Chicken through 4.8.0.3 allows attackers to cause a denial of service (crash) by opening a file descriptor with a large integer value. NOTE: this issue exists because of an incomplete fix for CVE-2012-6122.
CVSS Score
8.8
EPSS Score
0.008
Published
2019-10-31
Buffer overflow in the thread scheduler in Chicken before 4.8.0.1 allows attackers to cause a denial of service (crash) by opening a file descriptor with a large integer value.
CVSS Score
7.5
EPSS Score
0.021
Published
2019-10-31
Chicken before 4.8.0 does not properly handle NUL bytes in certain strings, which allows an attacker to conduct "poisoned NUL byte attack."
CVSS Score
6.5
EPSS Score
0.004
Published
2019-10-31
Chicken before 4.8.0 is susceptible to algorithmic complexity attacks related to hash table collisions.
CVSS Score
9.8
EPSS Score
0.006
Published
2019-10-31
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
Untrusted search path vulnerability in csi in Chicken before 4.8.2 allows local users to execute arbitrary code via a Trojan horse .csirc in the current working directory.
CVSS Score
4.4
EPSS Score
0.001
Published
2014-09-29
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