CVE-2017-11343
CVE-2017-11343 is a high-severity vulnerability in Call-cc Chicken with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-407.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-407
- Affected product: Call-cc Chicken
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2017-11343?
- CVE-2017-11343 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2017-11343 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-11343?
- CVE-2017-11343 affects Call-cc Chicken. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-11343?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2017-11343 published?
- CVE-2017-11343 was published on 2017-07-17 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:call-cc:chicken:*:*:*:*:*:*:*:*
More vulnerabilities in Call-cc Chicken
- CVE-2022-45145 — Critical (CVSS 9.8): egg-compile.scm in CHICKEN 5.x before 5.3.1 allows arbitrary OS command execution during package installation via…
- CVE-2014-6310 — Critical (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 'select'…
- CVE-2012-6125 — Critical (CVSS 9.8): Chicken before 4.8.0 is susceptible to algorithmic complexity attacks related to hash table collisions.
- CVE-2016-6830 — Critical (CVSS 9.8): The "process-execute" and "process-spawn" procedures in CHICKEN Scheme used fixed-size buffers for holding the…
- CVE-2013-2075 — High (CVSS 8.8): Multiple buffer overflows in the (1) R5RS char-ready, (2) tcp-accept-ready, and (3) file-select procedures in Chicken…
- CVE-2013-2024 — High (CVSS 8.8): OS command injection vulnerability in the "qs" procedure from the "utils" module in Chicken before 4.9.0.
All CVEs affecting Call-cc Chicken →
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