CVE-2015-5738

Publication date 26 July 2016

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

The RSA-CRT implementation in the Cavium Software Development Kit (SDK) 2.x, when used on OCTEON II CN6xxx Hardware on Linux to support TLS with Perfect Forward Secrecy (PFS), makes it easier for remote attackers to obtain private RSA keys by conducting a Lenstra side-channel attack.

Read the notes from the security team

Status

Package Ubuntu Release Status
openssl 15.04 vivid
Not affected
14.04 LTS trusty
Not affected
12.04 LTS precise
Not affected
openssl098 15.04 vivid
Not affected
14.04 LTS trusty Not in release
12.04 LTS precise
Not affected

Notes

mdeslaur

openssl upstream isn't affected

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Other references