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veracodeVeracode Vulnerability DatabaseVERACODE:3343
HistoryJan 26, 2017 - 8:01 a.m.

Side Channel Attack On Modular Exponentiation

2017-01-2608:01:41
Veracode Vulnerability Database
sca.analysiscenter.veracode.com
11

5.1 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

1.9 Low

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

OpenSSL is vulnerable to side channel attacks. The vulnerability exploits cache-bank conflicts on the Intel Sandy-Bridge microarchitecture, exposing RSA keys. However, an attacker can only exploit this only if he has control of code in a thread running on the same hyper-threaded core as the victim thread who is executing decryption process.

References

5.1 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

1.9 Low

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N