CVE-2021-42341Public exploitNetwork attack vector

Utility crash via undersized path buffer

Published Oct 14, 2021 · Updated Aug 4, 2024

Memory corruption in OpenRC checkpath 0.44.0 through 0.44.6 allows attackers to crash the utility while it cleans a path. The clean_path function allocates strlen(path) bytes, then copies a terminating null byte beyond the heap buffer because strlen excludes that byte. The flaw is reached when checkpath normalizes a path; the demonstrated consequence is an invalid-pointer abort that stops the invoking service-start operation.

CVSS severity7.5
High
EPSS probability2.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in OpenRC checkpath 0.44.0 through 0.44.6 allows attackers to crash the utility while it cleans a path. The clean_path function allocates strlen(path) bytes, then copies a terminating null byte beyond the heap buffer because strlen excludes that byte. The flaw is reached when checkpath normalizes a path; the demonstrated consequence is an invalid-pointer abort that stops the invoking service-start operation.

The record

CVE
CVE-2021-42341
Published
Oct 14, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

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 exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

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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