PT-2019-9371 · Shellinabox+1 · Shellinabox+1

Imre Rad · Published 2019-03-17 · Updated 2024-08-19 · CVE-2018-16789

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions shellinabox versions prior to 2.20

Description The issue is related to 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 the service into an infinite loop, exhausting available CPU resources and taking the service down.

Recommendations For versions prior to 2.20, update to version 2.20 or later to resolve the issue. As a temporary workaround, consider restricting access to the service to minimize the risk of exploitation.

Exploit

Fix

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

ALT-PU-2021-1129

ALT-PU-2021-1143

ALT-PU-2024-11158

CVE-2018-16789

Affected Products

Alt Linux

Shellinabox

References · 17

• 🔥 http://packetstormsecurity.com/files/149978/Shell-In-A-Box-2.2.0-Denial-Of-Service.html · Exploit
• 🔥 http://seclists.org/fulldisclosure/2018/Oct/50 · Exploit
• https://github.com/shellinabox/shellinabox/commit/4f0ecc31ac6f985e0dd3f5a52cbfc0e9251f6361 · Patch
• https://cve.org/CVERecord?id=CVE-2018-16789 · Security Note
• https://errata.altlinux.org/ALT-PU-2024-11158 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-16789 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16789 · Security Note
• https://errata.altlinux.org/ALT-PU-2021-1129 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-16789 · Vendor Advisory
• https://errata.altlinux.org/ALT-PU-2021-1143 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-16789 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-16789 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-16789 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-16789 · Vendor Advisory
• https://github.com/shellinabox/shellinabox/pull/446 · Note