Vulnerability Name:

CVE-2019-20922 (CCN-170971)

Assigned:2019-11-04
Published:2019-11-04
Updated:2021-07-21
Summary:Handlebars before 4.4.5 allows Regular Expression Denial of Service (ReDoS) because of eager matching. The parser may be forced into an endless loop while processing crafted templates. This may allow attackers to exhaust system resources.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-835
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-20922

Source: XF
Type: UNKNOWN
nodejs-handlebars-dos(170971)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/handlebars-lang/handlebars.js/commit/8d5530ee2c3ea9f0aee3fde310b9f36887d00b8b

Source: MISC
Type: Third Party Advisory
https://snyk.io/vuln/SNYK-JS-HANDLEBARS-480388

Source: CCN
Type: IBM Security Bulletin 1846497 (Spectrum Control Standard Edition)
Node.js handlebars vulnerabilities affect IBM Spectrum Control (formerly Tivoli Storage Productivity Center)

Source: CCN
Type: IBM Security Bulletin 5693084 (App Connect Enterprise)
Vulnerability in Node.js affects IBM App Connect Enterprise V11

Source: CCN
Type: IBM Security Bulletin 6566889 (Spectrum Discover)
Critical Vulnerabilities in libraries used by libraries that IBM Spectrum discover is using (libraries of libraries)

Source: CCN
Type: IBM Security Bulletin 6848225 (Netcool Operations Insight)
Netcool Operations Insight v1.6.7 contains fixes for multiple security vulnerabilities.

Source: CCN
Type: IBM Security Bulletin 6857863 (MobileFirst Platform Foundation)
Multiple vulnerabilities found on thirdparty libraries used by IBM MobileFirst Platform

Source: CCN
Type: IBM Security Bulletin 6953705 (Business Automation Manager Open Editions)
Multiple security vulnerabilities are addressed with IBM Business Automation Manager Open Editions 8.0.2

Source: CCN
Type: NPM Web site
handlebars

Source: MISC
Type: Third Party Advisory
https://www.npmjs.com/advisories/1300

Vulnerable Configuration:Configuration 1:
  • cpe:/a:handlebarsjs:handlebars:*:*:*:*:*:node.js:*:* (Version >= 4.0.0 and < 4.4.5)

    • Configuration CCN 1:
  • cpe:/a:nodejs:node.js:*:*:*:*:-:*:*:*
  • OR cpe:/a:ibm:app_connect:11.0.0.0:*:*:*:enterprise:*:*:*
  • OR cpe:/a:ibm:mobilefirst_platform_foundation:8.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:app_connect_enterprise:11.0.0.7:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    handlebarsjs handlebars *
    nodejs node.js *
    ibm app connect 11.0.0.0
    ibm mobilefirst platform foundation 8.0.0
    ibm app connect enterprise 11.0.0.7