CVE-2021-38185 - Vulnerability Details - OpenCVE

GNU cpio through 2.13 allows attackers to execute arbitrary code via a crafted pattern file, because of a dstring.c ds_fgetstr integer overflow that triggers an out-of-bounds heap write. NOTE: it is unclear whether there are common cases where the pattern file, associated with the -E option, is untrusted data.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Gnu	Cpio
Redhat	Enterprise Linux

Configuration 1 [-]

cpe:2.3:a:gnu:cpio:*:*:*:*:*:*:*:*

Package	CPE	Advisory	Released Date
Red Hat Enterprise Linux 8
cpio-0:2.12-11.el8	cpe:/o:redhat:enterprise_linux:8	RHSA-2022:1991	2022-05-10T00:00:00Z

References

Link	Providers
https://git.savannah.gnu.org/cgit/cpio.git/commit/?id=dd96882877721703e19272fe25034560b794061b
https://github.com/fangqyi/cpiopwn
https://lists.debian.org/debian-lts-announce/2023/06/msg00007.html
https://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00000.html
https://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00002.html
https://nvd.nist.gov/vuln/detail/CVE-2021-38185
https://www.cve.org/CVERecord?id=CVE-2021-38185

History

Mon, 09 Jun 2025 15:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-08-07T00:00:00.000Z

Updated: 2025-06-09T15:11:29.808Z

Reserved: 2021-08-07T00:00:00.000Z

Link: CVE-2021-38185

Vulnrichment

Updated: 2024-08-04T01:37:16.303Z

NVD

Status : Modified

Published: 2021-08-08T00:15:07.027

Modified: 2025-06-09T15:15:26.157

Link: CVE-2021-38185

Redhat

Severity : Moderate

Publid Date: 2021-08-06T00:00:00Z

Links: CVE-2021-38185 - Bugzilla

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