Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Physical
0

CVE-2018-16868

Disclosure Date: December 03, 2018
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Description

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

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CVSS V3 Severity and Metrics
Base Score:
5.6 Medium
Impact Score:
4.7
Exploitability Score:
0.4
Vector:
CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Attack Vector (AV):
Physical
Attack Complexity (AC):
High
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
High
Integrity (I):
Low
Availability (A):
None

General Information

Vendors

  • gnu

Products

  • gnutls
Technical Analysis