HOMEVULNERABILITIESCVE-2017-9334
HIGH

CVE-2017-9334

CWE-20Published: June 1, 2017· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2017-9334 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

call-cc1 product(s)
chicken
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://lists.nongnu.org/archive/html/chicken-announce/2017-05/msg00000.html
PATCHhttp://lists.nongnu.org/archive/html/chicken-hackers/2017-05/msg00099.html
PATCHhttp://lists.nongnu.org/archive/html/chicken-announce/2017-05/msg00000.html
PATCHhttp://lists.nongnu.org/archive/html/chicken-hackers/2017-05/msg00099.html

All References (4)

→
http://lists.nongnu.org/archive/html/chicken-announce/2017-05/msg00000.htmlPatch · Third Party Advisory
→
http://lists.nongnu.org/archive/html/chicken-hackers/2017-05/msg00099.htmlPatch · Third Party Advisory
→
http://lists.nongnu.org/archive/html/chicken-announce/2017-05/msg00000.htmlPatch · Third Party Advisory
→
http://lists.nongnu.org/archive/html/chicken-hackers/2017-05/msg00099.htmlPatch · Third Party Advisory

Quick Facts

CVE IDCVE-2017-9334
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedJun 1, 2017

Related CVEs (CWE-20)

CVE-2011-0285
10.0
CVE-2026-47928
10.0
CVE-2011-4755
10.0
CVE-2011-1018
10.0
CVE-2008-0244
10.0
CVE-2008-4910
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-9334 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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