// For flags

CVE-2023-45236

Predictable TCP ISNs in EDK II Network Package

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

EDK2's Network Package is susceptible to a predictable TCP Initial Sequence Number. This
vulnerability can be exploited by an attacker to gain unauthorized
access and potentially lead to a loss of Confidentiality.

EDK2's Network Package es susceptible a Initial Sequence Number TCP predecible. Un atacante puede aprovechar esta vulnerabilidad para obtener acceso no autorizado y potencialmente provocar una pérdida de confidencialidad.

A security flaw has been identified in EDK2, the open-source reference implementation of the UEFI specification. This vulnerability enables an unauthorized attacker to potentially disclose sensitive information.

*Credits: Quarkslab Vulnerability Reports Team, Doug Flick
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-10-05 CVE Reserved
  • 2024-01-16 CVE Published
  • 2024-03-08 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CAPEC
  • CAPEC-13: Subverting Environment Variable Values
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Tianocore
Search vendor "Tianocore"
 Edk2
Search vendor "Tianocore" for product "Edk2"
 <= 202311
Search vendor "Tianocore" for product "Edk2" and version " <= 202311"
-
Affected