cve/2016/CVE-2016-0702.md

### [CVE-2016-0702](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0702)
![](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

The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a crafted application on the same Intel Sandy Bridge CPU core as a victim and leveraging cache-bank conflicts, aka a "CacheBleed" attack.

### POC

#### Reference
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/BlaineConnaughton/ubuntuCVEScraper
- https://github.com/RedHatSatellite/satellite-host-cve
- https://github.com/Trinadh465/OpenSSL-1_0_1g_CVE-2016-0702
- https://github.com/chnzzh/OpenSSL-CVE-lib
- https://github.com/kn0630/vulssimulator_ds
- https://github.com/rsumnerz/vuls
- https://github.com/xmppadmin/vuls