TianoCore EDK2 stable202308 TCP Initial Sequence Number weak prng

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in TianoCore EDK2 stable202308. This affects an unknown function of the component TCP Initial Sequence Number Handler. Executing a manipulation can lead to weak prng. This vulnerability is tracked as CVE-2023-45237. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in TianoCore EDK2 stable202308 and classified as problematic. This vulnerability affects an unknown function of the component TCP Initial Sequence Number Handler. The manipulation with an unknown input leads to a weak prng vulnerability. The CWE definition for the vulnerability is CWE-338. The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong. As an impact it is known to affect confidentiality. CVE summarizes:

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.

The weakness was disclosed 01/16/2024 as GHSA-hc6x-cw6p-gj7h. The advisory is shared for download at github.com. This vulnerability was named CVE-2023-45237 since 10/05/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.001.

The vulnerability scanner Nessus provides a plugin with the ID 209533 (Oracle Linux 8 : edk2 (ELSA-2024-28600)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (209533) and CERT Bund (WID-SEC-2024-0126). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Dell Computer
  • HPE ProLiant
  • HPE Synergy
  • Lenovo Computer
  • Dell BIOS
  • HP Computer
  • Insyde UEFI Firmware
  • RESF Rocky Linux
  • Dell PowerEdge
  • Lenovo BIOS

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (TianoCore.org): 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Weak prng
CWE: CWE-338 / CWE-331 / CWE-330
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209533
Nessus Name: Oracle Linux 8 : edk2 (ELSA-2024-28600)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/05/2023 🔍
01/16/2024 +103 days 🔍
01/16/2024 +0 days 🔍
05/04/2026 +839 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-hc6x-cw6p-gj7h
Status: Confirmed

CVE: CVE-2023-45237 (🔍)
GCVE (CVE): GCVE-0-2023-45237
GCVE (VulDB): GCVE-100-250852
CERT Bund: WID-SEC-2024-0126 - EDK2 NetworkPkg IP stack implementation: Mehrere Schwachstellen

Entryinfo

Created: 01/16/2024 18:14
Updated: 05/04/2026 09:22
Changes: 01/16/2024 18:14 (48), 02/06/2024 09:57 (12), 10/23/2024 18:58 (17), 09/07/2025 03:38 (7), 05/04/2026 09:19 (1), 05/04/2026 09:22 (3)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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