TianoCore EDK2 stable202308 TCP Initial Sequence Number information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in TianoCore EDK2 stable202308. The impacted element is an unknown function of the component TCP Initial Sequence Number Handler. Performing a manipulation results in information disclosure. This vulnerability is identified as CVE-2023-45236. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in TianoCore EDK2 stable202308. This affects some unknown processing of the component TCP Initial Sequence Number Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

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 released 01/16/2024 as GHSA-hc6x-cw6p-gj7h. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-45236 since 10/05/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 209346 (Oracle Linux 7 : edk2 (ELSA-2024-12794)), 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 (209346) and CERT Bund (WID-SEC-2024-0126). Statistical analysis made it clear that VulDB provides the best quality 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: 5.7
VulDB Meta Temp Score: 5.6

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.8
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 209346
Nessus Name: Oracle Linux 7 : edk2 (ELSA-2024-12794)

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-2023-45236 (🔍)
GCVE (CVE): GCVE-0-2023-45236
GCVE (VulDB): GCVE-100-250851
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), 10/21/2024 18:51 (17), 09/07/2025 03:38 (7), 05/04/2026 09:19 (1), 05/04/2026 09:22 (4)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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