CVE-2021-36976
Estado: ModificadaMedia (6.5)—
libarchive 3.4.1 through 3.5.1 has a use-after-free in copy_string (called from do_uncompress_block and process_block).
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Puntuación base: 6.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 2.84%
- Percentil entre todas las CVEs puntuadas: 86
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (7)
CWE
- CWE-416
Referencias
- http://seclists.org/fulldisclosure/2022/Mar/27
- http://seclists.org/fulldisclosure/2022/Mar/28
- http://seclists.org/fulldisclosure/2022/Mar/29
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32375
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libarchive/OSV-2021-557.yaml
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SE5NJQNM22ZE5Z55LPAGCUHSBQZBKMKC/
- https://security.gentoo.org/glsa/202208-26
- https://support.apple.com/kb/HT213182
- https://support.apple.com/kb/HT213183
- https://support.apple.com/kb/HT213193
- http://seclists.org/fulldisclosure/2022/Mar/27
- http://seclists.org/fulldisclosure/2022/Mar/28
- http://seclists.org/fulldisclosure/2022/Mar/29
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32375
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libarchive/OSV-2021-557.yaml
- https://lists.debian.org/debian-lts-announce/2024/11/msg00007.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SE5NJQNM22ZE5Z55LPAGCUHSBQZBKMKC/
- https://security.gentoo.org/glsa/202208-26
- https://support.apple.com/kb/HT213182
- https://support.apple.com/kb/HT213183
- https://support.apple.com/kb/HT213193
JSON original (NVD)
Mostrar
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"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "MEDIUM",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "NONE"
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"integrityImpact": "NONE",
"userInteraction": "REQUIRED",
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"vulnStatus": "Modified",
"weaknesses": [
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"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
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],
"descriptions": [
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"lang": "en",
"value": "libarchive 3.4.1 through 3.5.1 has a use-after-free in copy_string (called from do_uncompress_block and process_block)."
},
{
"lang": "es",
"value": "libarchive versiones 3.4.1 hasta 3.5.1, presenta un uso de memoria previamente liberada en la función copy_string (llamado desde do_uncompress_block y process_block)"
}
],
"lastModified": "2026-06-17T03:59:45.350",
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