CVE-2021-23177

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-23177
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-23177.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-23177
Downstream
Related
Published
2022-08-23T16:15:09Z
Modified
2025-10-15T12:37:11.109838Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

An improper link resolution flaw while extracting an archive can lead to changing the access control list (ACL) of the target of the link. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to change the ACL of a file on the system and gain more privileges.

References

Affected packages

Git / github.com/libarchive/libarchive

Affected ranges

Type
GIT
Repo
https://github.com/libarchive/libarchive
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
fba4f123cc456d2b2538f811bb831483bf336bad

Affected versions

v2.*

v2.6.0
v2.6.1
v2.6.2
v2.7.0
v2.7.1
v2.8.0
v2.8.1
v2.8.2
v2.8.3
v2.8.4
v2.8.5

v3.*

v3.0.0a
v3.0.1b
v3.0.2
v3.0.3
v3.0.4
v3.1.0
v3.1.1
v3.1.2
v3.1.900a
v3.1.901a
v3.2.0
v3.2.1
v3.2.2
v3.3.0
v3.3.1
v3.3.2
v3.3.3
v3.4.0
v3.4.1
v3.4.2
v3.4.3
v3.5.0
v3.5.1

Database specific

vanir_signatures

[
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        "signature_type": "Function",
        "deprecated": false,
        "source": "https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad",
        "signature_version": "v1",
        "target": {
            "function": "set_acl",
            "file": "libarchive/archive_disk_acl_freebsd.c"
        },
        "digest": {
            "function_hash": "119863235124518575270985428048575660452",
            "length": 4917.0
        },
        "id": "CVE-2021-23177-0c1bd6e2"
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "source": "https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad",
        "signature_version": "v1",
        "target": {
            "function": "set_richacl",
            "file": "libarchive/archive_disk_acl_linux.c"
        },
        "digest": {
            "function_hash": "247656066004948287138564276136791744976",
            "length": 2892.0
        },
        "id": "CVE-2021-23177-5d16566d"
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "source": "https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad",
        "signature_version": "v1",
        "target": {
            "function": "set_acl",
            "file": "libarchive/archive_disk_acl_linux.c"
        },
        "digest": {
            "function_hash": "302990961322684235683817322928752066115",
            "length": 2866.0
        },
        "id": "CVE-2021-23177-7a77de8b"
    },
    {
        "signature_type": "Function",
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        "signature_version": "v1",
        "target": {
            "function": "archive_write_disk_set_acls",
            "file": "libarchive/archive_disk_acl_sunos.c"
        },
        "digest": {
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            "length": 547.0
        },
        "id": "CVE-2021-23177-8d82bea3"
    },
    {
        "signature_type": "Function",
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        "source": "https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad",
        "signature_version": "v1",
        "target": {
            "function": "archive_write_disk_set_acls",
            "file": "libarchive/archive_disk_acl_freebsd.c"
        },
        "digest": {
            "function_hash": "35384814950336608914965040955053504744",
            "length": 824.0
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        "id": "CVE-2021-23177-b0e73bb0"
    },
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        "target": {
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        },
        "digest": {
            "function_hash": "263031339257398541578009937029100212642",
            "length": 968.0
        },
        "id": "CVE-2021-23177-c08cc697"
    },
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        "signature_type": "Line",
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        },
        "digest": {
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            "length": 4985.0
        },
        "id": "CVE-2021-23177-eccefea9"
    },
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        "deprecated": false,
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        "signature_version": "v1",
        "target": {
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        },
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        "id": "CVE-2021-23177-fac0efc9"
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        "signature_version": "v1",
        "target": {
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        },
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        "id": "CVE-2021-23177-fc0fa152"
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]