cve/2015/CVE-2015-3197.md

### [CVE-2015-3197](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3197)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

ssl/s2_srvr.c in OpenSSL 1.0.1 before 1.0.1r and 1.0.2 before 1.0.2f does not prevent use of disabled ciphers, which makes it easier for man-in-the-middle attackers to defeat cryptographic protection mechanisms by performing computations on SSLv2 traffic, related to the get_client_master_key and get_client_hello functions.

### POC

#### Reference
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.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/bulletinjan2016-2867206.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/91787
- https://www.kb.cert.org/vuls/id/257823

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Live-Hack-CVE/CVE-2015-3197
- https://github.com/RClueX/Hackerone-Reports
- https://github.com/RedHatSatellite/satellite-host-cve
- https://github.com/Trinadh465/OpenSSL-1_0_1g_CVE-2015-3197
- https://github.com/chnzzh/OpenSSL-CVE-lib
- https://github.com/erwinchang/utility-library
- https://github.com/halon/changelog
- https://github.com/imhunterand/hackerone-publicy-disclosed