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

CVE-2021-33560

Disclosure Date: June 08, 2021
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
None
Availability (A):
None

General Information

Vendors

  • debian,
  • fedoraproject,
  • gnupg,
  • oracle

Products

  • communications cloud native core binding support function 1.11.0,
  • communications cloud native core network function cloud native environment 1.10.0,
  • communications cloud native core network function cloud native environment 1.9.0,
  • communications cloud native core network repository function 1.14.0,
  • communications cloud native core network repository function 1.15.0,
  • communications cloud native core network repository function 1.15.1,
  • communications cloud native core network slice selection function 1.8.0,
  • communications cloud native core service communication proxy 1.15.0,
  • debian linux 9.0,
  • fedora 33,
  • fedora 34,
  • libgcrypt
Technical Analysis