Accessibility Options |  Sitemap |  Contact Us
   
 
 
 
HOME space ABOUTCERTIn space KNOWLEDGEBASE space TRAINING space ADVISORIES space VULNOTES space space Facebook space x space insta space youtube space Linkedin
WLine
DigitalIndia
WLine
csk
WLine
Full Member FIRST
Line
Operational Member TFCSIRT
Line
Accredited Member APCERT
Line
Global Research Partner APWG
Line
Associate Partner Charter
Line
CNA
WLine
 Directions by CERT-In under  Section 70B, Information  Technology Act 2000
WLine
 Guidelines on Information  Security Practices for  Government Entities
WLine
  Blueprint for Reducing NEW
  Exposure and Defending against
  AI-Assisted Vulnerabilities
  Exploitation in Digital
  Infrastructure
WLine
 15 Elemental Cyber NEW
 Defense Controls for Micro,
 Small, and Medium Enterprises
 (MSMEs)
WLine
 Technical Guidelines on NEW  SBOM, QBOM & CBOM, AIBOM
 and HBOM Version 2.0
WLine
 Cyber Security Guidelines for
 Smart City Infrastructure NEW
WLine
 Cyber Security Framework
 and Guidelines for Space NEW
 including Satellite
 Communication
About CERT-in
Line
point point Client's /Citizen's Charter
Line
point point Roles & Functions
Line
point point Advisory Committee
Line
point point Act/Rules/Regulations
Line
point point Internal Complaint Committee         (ICC) 
Line
point point RFC2350 
line
point point Press  
Line
point point Tender 
Line
point point Subscribe Mailing List
Line
point point Contact Us
Line
Line
Reporting
point
 Incident Reporting
point
Line
point
 Vulnerability Reporting
point
Line
point
 Feedback
point
Line
KnowledgeBase
Line
point Point Guidelines
Line
point Point Presentations
Line
point Point White Papers 
Line
point Point Annual Report 
Line
Line
Line
line
Line
line
line
Advisories
Line
VulnerabilityNotes
Line
RelatedLinks
Line
point Point World CERTs
Line
point point Antivirus Resources
line
point point FAQ
line
line
Line
Line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
spacer
Home - Vulnerability NotesPrint
point
CERT-In Vulnerability Note CIVN-2020-0444
NULL pointer dereference Vulnerability in OpenSSL

Original Issue Date:December 21, 2020

Severity Rating: MEDIUM

Software Affected

  • OpenSSL versions 1.1.1 and 1.0.2

Overview

A NULL pointer dereference vulnerability has been found in Open SSL which may lead to a possible denial of service(DoS) attack on a server or client application running OpenSSL.

Description

This vulnerability is due to a NULL pointer de-reference error. A remote attacker can trigger denial of service conditions via the API functions viz TS_RESP_verify_response and TS_RESP_verify_token. An attacker could exploit this vulnerability by controlling both items being compared. For example if the attacker can trick a client or server into checking a malicious certificate against a malicious CRL then this may occur. CERT-IN - Computer Emergency Response Team - Page Requested Currently Not available CERT-IN - Computer Emergency Response Team - Page Requested Currently Not available