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Public proof of concept

CVE-2023-45318

A public proof of concept exists; no exploitation attested.

  • Published2024-02-20
  • WeaknessCWE-122 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A heap-based buffer overflow vulnerability exists in the HTTP Server functionality of Weston Embedded uC-HTTP git commit 80d4004. A specially crafted network packet can lead to arbitrary code execution. An attacker can send a malicious packet to trigger this vulnerability.

Timeline

dates in UTC
  1. 2024-02-2015:15CVE publishedNVD

Versions per branch

NVD · CISA-ADP
Weston-embedded uc-http
BranchAffectedFixed in
—all versionsno fix published
—= git commit 80d4004no fix published
Silabs gecko platform
BranchAffectedFixed in
4.3= 4.3.2.0no fix published
Silabs gecko software development kit
BranchAffectedFixed in
4.3= 4.3.2.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA2 products

As talos, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Silicon Labs Gecko Platform
    Affected
    • = Silicon Labs Gecko Platform 4.3.2.0no fix stated
  • Weston Embedded uC-HTTP
    Affected
    • = git commit 80d4004no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2024-02-20

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2024-02-20
  • CNACVSS 3.110known since 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • CNAweakness (CWE)CWE-122known since 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score1.7 %2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2024-02-20
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-j494-r8wx-qpjr

Frequently asked questions

What is CVE-2023-45318?

A heap-based buffer overflow vulnerability exists in the HTTP Server functionality of Weston Embedded uC-HTTP git commit 80d4004. A specially crafted network packet can lead to arbitrary code execution. An attacker can send a malicious packet to trigger this vulnerability.

Is CVE-2023-45318 actively exploited?

A proof-of-concept exploit exists for CVE-2023-45318, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-45318?

CVE-2023-45318 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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