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CVE-2016-0702

Published: 1 March 2016

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.

Priority

Low

Cvss 3 Severity Score

5.1

Score breakdown

Status

Package Release Status
openssl
Launchpad, Ubuntu, Debian
artful
Released (1.0.2g-1ubuntu2)
bionic
Released (1.0.2g-1ubuntu2)
cosmic
Released (1.0.2g-1ubuntu2)
disco
Released (1.0.2g-1ubuntu2)
precise
Released (1.0.1-4ubuntu5.35)
trusty
Released (1.0.1f-1ubuntu2.18)
upstream Needs triage

wily
Released (1.0.2d-0ubuntu1.4)
xenial
Released (1.0.2g-1ubuntu2)
yakkety
Released (1.0.2g-1ubuntu2)
zesty
Released (1.0.2g-1ubuntu2)
openssl098
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Ignored
(end of life)
trusty Does not exist
(trusty was needed)
upstream Needs triage

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 5.1
Attack vector Local
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N