CVE-2018-16869

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

03/12/2018

Last modified:

03/02/2023

Description

A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

Impact

Vector 3.x

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.70 MEDIUM
Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N

Attack Vector (AV): Physical
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): Low
Availability (A): None

Base Score 3.x

5.70

Severity 3.x

MEDIUM

Vector 2.0

AV:L/AC:M/Au:N/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 3.30 LOW
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:N

Attack Vector (AV): Local
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): None