CVE-2016-0702
openssl - security update
5.1
MEDIUM
CVSS 3.1
EPSS 0.55%
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.
How to fix CVE-2016-0702
To remediate CVE-2016-0702, upgrade the affected package to a fixed version below.
- —upgrade to 1.0.2g-1 or later
- —upgrade to 1.0.1e-2+deb7u20 or later
Is CVE-2016-0702 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.0.2g-1
- from 0, < 1.0.1e-2+deb7u20
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.1 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |