CVE-2024-42381Network attack vector

Code execution via untrusted ELF interpreter

Published Jul 31, 2024 · Updated Jul 31, 2024

Code execution in Homebrew before 4.2.20 allows remote attackers to run code through a downloaded ELF file with a crafted interpreter. Library/Homebrew/os/linux/elf.rb invokes ldd on the untrusted ELF during dependency discovery, causing its custom .interp loader to run. A user must initiate an affected package operation on Linux, but execution occurs during unsandboxed relocation before downloaded package content is expected to run.

CVSS severity8.3
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in Homebrew before 4.2.20 allows remote attackers to run code through a downloaded ELF file with a crafted interpreter. Library/Homebrew/os/linux/elf.rb invokes ldd on the untrusted ELF during dependency discovery, causing its custom .interp loader to run. A user must initiate an affected package operation on Linux, but execution occurs during unsandboxed relocation before downloaded package content is expected to run.

The record

CVE
CVE-2024-42381
Published
Jul 31, 2024
Updated
Jul 31, 2024
Vendor
Homebrew
Product
Homebrew
Classifications
CWE-830, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 31, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 31, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.2.20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Homebrew · Homebrewversion=0 <4.2.20

Published CVSS scores

8.3MITRECVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-830Inclusion of Web Functionality from an Untrusted Source
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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