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CVE-2021-38185

Date: August 6, 2021

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.

Language: C

Severity Score

Related Resources (11)

https://github.com/fangqyi/cpiopwn
https://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00000.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-38185
https://lists.debian.org/debian-lts-announce/2023/06/msg00007.html
https://access.redhat.com/security/cve/CVE-2021-38185
https://git.savannah.gnu.org/cgit/cpio.git/commit/?id=dd96882877721703e19272fe25034560b794061b
https://security-tracker.debian.org/tracker/CVE-2021-38185
https://nvd.nist.gov/vuln/detail/CVE-2021-38185
https://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00002.html
https://security.alpinelinux.org/vuln/CVE-2021-38185
https://www.mend.io/vulnerability-database/CVE-2021-38185

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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