What’s Vulnerable › Vulnerabilities

CVE-2017-9732

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-12-20 · updated 2026-06-17
• Weakness: CWE-400

Description

The read_packet function in knc (Kerberised NetCat) before 1.11-1 is vulnerable to denial of service (memory exhaustion) that can be exploited remotely without authentication, possibly affecting another services running on the targeted host.

Affected products

• Secure-Endpoints Kerberised Netcat: before 1.11-1 — fixed in 1.11-1

How to fix

Upgrade to a fixed version: Secure-Endpoints Kerberised Netcat 1.11-1. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/150534/knc-Kerberized-NetCat-Denial-Of-Service.html
• http://seclists.org/fulldisclosure/2018/Nov/65
• https://github.com/elric1/knc/commit/f237f3e09ecbaf59c897f5046538a7b1a3fa40c1
• https://github.com/irsl/knc-memory-exhaustion/
• http://packetstormsecurity.com/files/150534/knc-Kerberized-NetCat-Denial-Of-Service.html
• http://seclists.org/fulldisclosure/2018/Nov/65
• https://github.com/elric1/knc/commit/f237f3e09ecbaf59c897f5046538a7b1a3fa40c1
• https://github.com/irsl/knc-memory-exhaustion/

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