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CVE-2018-16789

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Date: March 17, 2019

libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.

Language: C

Severity Score

Related Resources (8)

https://code.google.com/archive/p/shellinabox/issues
https://security-tracker.debian.org/tracker/CVE-2018-16789
http://packetstormsecurity.com/files/149978/Shell-In-A-Box-2.2.0-Denial-Of-Service.html
https://github.com/shellinabox/shellinabox/commit/4f0ecc31ac6f985e0dd3f5a52cbfc0e9251f6361
http://seclists.org/fulldisclosure/2018/Oct/50
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-16789
https://nvd.nist.gov/vuln/detail/CVE-2018-16789
https://www.mend.io/vulnerability-database/CVE-2018-16789

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

Loop with Unreachable Exit Condition ('Infinite Loop')

CWE-835

CVSS v3

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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