CVE-2016-0702
OpenSSL: Side channel attack on modular exponentiation
Severity Score
5.1
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
La función MOD_EXP_CTIME_COPY_FROM_PREBUF en crypto/bn/bn_exp.c en OpenSSL 1.0.1 en versiones anteriores a 1.0.1s y 1.0.2 en versiones anteriores a 1.0.2g no considera correctamente las veces que se accede al cache-bank durante la exponenciación modular, lo que facilita a usuarios locales descubrir las claves RSA ejecutando una aplicación manipulada en el mismo núcleo de la CPU Intel Sandy Bridge como víctima y aprovechándose de los conflictos del cache-bank, también conocida como un ataque "CacheBleed".
A side-channel attack was found that makes use of cache-bank conflicts on the Intel Sandy-Bridge microarchitecture. An attacker who has the ability to control code in a thread running on the same hyper-threaded core as the victim's thread that is performing decryption, could use this flaw to recover RSA private keys.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2015-12-16 CVE Reserved
- 2016-03-01 CVE Published
- 2023-11-10 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
References (46)
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html | 2023-11-07 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1 Search vendor "Openssl" for product "Openssl" and version "1.0.1" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1 Search vendor "Openssl" for product "Openssl" and version "1.0.1" | beta1 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1 Search vendor "Openssl" for product "Openssl" and version "1.0.1" | beta2 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1 Search vendor "Openssl" for product "Openssl" and version "1.0.1" | beta3 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1a Search vendor "Openssl" for product "Openssl" and version "1.0.1a" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1b Search vendor "Openssl" for product "Openssl" and version "1.0.1b" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1c Search vendor "Openssl" for product "Openssl" and version "1.0.1c" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1d Search vendor "Openssl" for product "Openssl" and version "1.0.1d" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1e Search vendor "Openssl" for product "Openssl" and version "1.0.1e" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1f Search vendor "Openssl" for product "Openssl" and version "1.0.1f" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1g Search vendor "Openssl" for product "Openssl" and version "1.0.1g" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1h Search vendor "Openssl" for product "Openssl" and version "1.0.1h" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1i Search vendor "Openssl" for product "Openssl" and version "1.0.1i" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1j Search vendor "Openssl" for product "Openssl" and version "1.0.1j" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1k Search vendor "Openssl" for product "Openssl" and version "1.0.1k" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1l Search vendor "Openssl" for product "Openssl" and version "1.0.1l" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1m Search vendor "Openssl" for product "Openssl" and version "1.0.1m" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1n Search vendor "Openssl" for product "Openssl" and version "1.0.1n" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1o Search vendor "Openssl" for product "Openssl" and version "1.0.1o" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1p Search vendor "Openssl" for product "Openssl" and version "1.0.1p" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1q Search vendor "Openssl" for product "Openssl" and version "1.0.1q" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1r Search vendor "Openssl" for product "Openssl" and version "1.0.1r" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2 Search vendor "Openssl" for product "Openssl" and version "1.0.2" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2 Search vendor "Openssl" for product "Openssl" and version "1.0.2" | beta1 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2 Search vendor "Openssl" for product "Openssl" and version "1.0.2" | beta2 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2 Search vendor "Openssl" for product "Openssl" and version "1.0.2" | beta3 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2a Search vendor "Openssl" for product "Openssl" and version "1.0.2a" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2b Search vendor "Openssl" for product "Openssl" and version "1.0.2b" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2c Search vendor "Openssl" for product "Openssl" and version "1.0.2c" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2d Search vendor "Openssl" for product "Openssl" and version "1.0.2d" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2e Search vendor "Openssl" for product "Openssl" and version "1.0.2e" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2f Search vendor "Openssl" for product "Openssl" and version "1.0.2f" | - |
Affected
| ||||||
| Nodejs Search vendor "Nodejs" | Node.js Search vendor "Nodejs" for product "Node.js" | >= 4.0.0 <= 4.1.2 Search vendor "Nodejs" for product "Node.js" and version " >= 4.0.0 <= 4.1.2" | - |
Affected
| ||||||
| Nodejs Search vendor "Nodejs" | Node.js Search vendor "Nodejs" for product "Node.js" | >= 4.2.0 < 4.3.2 Search vendor "Nodejs" for product "Node.js" and version " >= 4.2.0 < 4.3.2" | lts |
Affected
| ||||||
| Nodejs Search vendor "Nodejs" | Node.js Search vendor "Nodejs" for product "Node.js" | >= 5.0.0 < 5.7.1 Search vendor "Nodejs" for product "Node.js" and version " >= 5.0.0 < 5.7.1" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | esm |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 15.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.10" | - |
Affected
| ||||||