Vulnerability Details CVE-2021-38185
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.215
EPSS Ranking 95.3%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 6.8
References
- 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://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
Products affected by CVE-2021-38185
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cpe:2.3:a:gnu:cpio:-
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cpe:2.3:a:gnu:cpio:1.0
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cpe:2.3:a:gnu:cpio:1.1
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cpe:2.3:a:gnu:cpio:1.2
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cpe:2.3:a:gnu:cpio:1.3
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cpe:2.3:a:gnu:cpio:2.10
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cpe:2.3:a:gnu:cpio:2.11
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cpe:2.3:a:gnu:cpio:2.12
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cpe:2.3:a:gnu:cpio:2.13
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cpe:2.3:a:gnu:cpio:2.4-2
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cpe:2.3:a:gnu:cpio:2.5
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cpe:2.3:a:gnu:cpio:2.5.90
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cpe:2.3:a:gnu:cpio:2.6
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cpe:2.3:a:gnu:cpio:2.7
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cpe:2.3:a:gnu:cpio:2.8
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cpe:2.3:a:gnu:cpio:2.9