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    CVE-2017-11343

    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.

    Published:Jul 16, 2017
    Last Modified:Apr 20, 2025
    EPS:Jul 16, 2017
    EPSS Score:0.00241
    CVSS Score:7.5

    Affected Products

    Vendor
    Call-cc
    Product
    Chicken

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2022-45145 (CVSS 9.8) — egg-compile.scm in CHICKEN 5.x before 5.3.1 allows arbitrary OS command execution during package installation …
    CVE-2014-6310 (CVSS 9.8) — Buffer overflow in CHICKEN 4.9.0 and 4.9.0.1 may allow remote attackers to execute arbitrary code via the 'sel…
    CVE-2012-6125 (CVSS 9.8) — Chicken before 4.8.0 is susceptible to algorithmic complexity attacks related to hash table collisions.…
    CVE-2012-6124 (CVSS 5.3) — A casting error in Chicken before 4.8.0 on 64-bit platform caused the random number generator to return a cons…
    CVE-2012-6123 (CVSS 6.5) — Chicken before 4.8.0 does not properly handle NUL bytes in certain strings, which allows an attacker to conduc…
    CVE-2012-6122 (CVSS 7.5) — Buffer overflow in the thread scheduler in Chicken before 4.8.0.1 allows attackers to cause a denial of servic…
    CVE-2013-2075 (CVSS 8.8) — Multiple buffer overflows in the (1) R5RS char-ready, (2) tcp-accept-ready, and (3) file-select procedures in …
    CVE-2013-2024 (CVSS 8.8) — OS command injection vulnerability in the "qs" procedure from the "utils" module in Chicken before 4.9.0.…
    CVE-2017-9334 (CVSS 7.5) — An incorrect "pair?" check in the Scheme "length" procedure results in an unsafe pointer dereference in all CH…
    CVE-2015-4556 (CVSS 7.5) — The string-translate* procedure in the data-structures unit in CHICKEN before 4.10.0 allows remote attackers t…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High