### [CVE-2016-6304](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6304)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

Multiple memory leaks in t1_lib.c in OpenSSL before 1.0.1u, 1.0.2 before 1.0.2i, and 1.1.0 before 1.1.0a allow remote attackers to cause a denial of service (memory consumption) via large OCSP Status Request extensions.

### POC

#### Reference
- http://packetstormsecurity.com/files/139091/OpenSSL-x509-Parsing-Double-Free-Invalid-Free.html
- http://seclists.org/fulldisclosure/2017/Jul/31
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312
- https://kc.mcafee.com/corporate/index?page=content&id=SB10171
- https://kc.mcafee.com/corporate/index?page=content&id=SB10215
- https://www.tenable.com/security/tns-2016-20

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/AgenticAI-LLM/Hackathon
- https://github.com/RClueX/Hackerone-Reports
- https://github.com/Samaritin/OSINT
- https://github.com/chnzzh/OpenSSL-CVE-lib
- https://github.com/guidovranken/openssl-x509-vulnerabilities
- https://github.com/halon/changelog
- https://github.com/idkwim/openssl-x509-vulnerabilities
- https://github.com/imhunterand/hackerone-publicy-disclosed
- https://github.com/nishanb/insecure-app
- https://github.com/pankajkryadav/Hacktivity