CVE-2016-0702

MEDIUM
5.1
CVSS Score
Published: March 3, 2016 at 12:00 AM UTC
Updated: June 17, 2026 at 12:38 AM UTC
4 products affected across 4 vendorsDebian LinuxUbuntu LinuxOpenSSL

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Severity
MEDIUM5.1
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.0.0 ≤ v ≤ 4.1.24.2.0 ≤ v < 4.3.25.0.0 ≤ v < 5.7.1
Affected range stops below 4.3.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.7.1, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
LOCAL
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200

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