CVE-2017-9334
HighSummary
An incorrect 'pair?' check in the 'length' procedure in CHICKEN Scheme leads to an unsafe pointer dereference. This allows an attacker to cause a denial of service by passing an improper list to an application that calls 'length'.
Risk Assessment
The organization may experience service outages, which can lead to loss of user trust and potential financial losses.
Recommendation
It is recommended to upgrade to CHICKEN Scheme version 4.13 or later to mitigate this vulnerability.
Other vulnerabilities in CHICKEN Scheme
See all- CVE-2017-11343High
All versions of CHICKEN Scheme up to and including 4.12.0 are vulnerable to an algorithmic complexity attack due to an incomplete fix for CVE-2012-6125. An attacker can provide crafted input that will result in O(n) lookup time in the symbol table.
- CVE-2017-6949High
An issue was discovered in CHICKEN Scheme through version 4.12.0 related to allocating an SRFI-4 vector in unmanaged memory. The vector size was used in unsanitised form as an argument to malloc(), which could lead to segfaults or buffer overflows.
- CVE-2016-6830Critical
The 'process-execute' and 'process-spawn' procedures in CHICKEN Scheme use fixed-size buffers for holding arguments and environment variables for the execve() call. This can lead to buffer overrun when user-supplied argument/environment variable lists are provided.
Original NVD description (English source)
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.