Information Exposure The advisory has been revoked - it doesn't affect any version of package openssl (opens in a new tab)

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1.91% (78^th percentile)

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Snyk IDSNYK-UBUNTU1504-OPENSSL-374149
published3 Mar 2016
disclosed3 Mar 2016

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Introduced: 3 Mar 2016

CVE-2016-0702 (opens in a new tab) CWE-200 (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:15.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Ubuntu.

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.