2 lines
9.3 KiB
JSON
2 lines
9.3 KiB
JSON
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An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system."},{"lang":"es","value":"Se ha encontrado un fallo en glibc. Un desbordamiento y subdesbordamiento de búfer en la función getcwd() puede conllevar a una corrupción de memoria cuando el tamaño del búfer es exactamente 1. Un atacante local que pueda controlar el búfer de entrada y el tamaño pasado a getcwd() en un programa setuid podría usar este fallo para ejecutar potencialmente código arbitrario y escalar sus privilegios en el sistema."}],"id":"CVE-2021-3999","lastModified":"2026-10-14T10:17:50.007","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":1.8,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":1.8,"impactScore":5.9,"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2021-3999","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","timestamp":"2025-12-02T20:54:28.821189Z","version":"2.0.3"}}]},"published":"2022-08-24T16:15:09.077","references":[{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"https://access.redhat.com/security/cve/CVE-2021-3999"},{"source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2024637"},{"source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"],"url":"https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html"},{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"https://security-tracker.debian.org/tracker/CVE-2021-3999"},{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20221104-0001/"},{"source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"],"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=28769"},{"source":"secalert@redhat.com","url":"https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e"},{"source":"secalert@redhat.com","tags":["Exploit","Mailing List","Third Party Advisory"],"url":"https://www.openwall.com/lists/oss-security/2022/01/24/4"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://access.redhat.com/security/cve/CVE-2021-3999"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2024637"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://security-tracker.debian.org/tracker/CVE-2021-3999"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20221104-0001/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"],"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=28769"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mailing List","Third Party Advisory"],"url":"https://www.openwall.com/lists/oss-security/2022/01/24/4"},{"source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html"},{"source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","url":"https://cert-portal.siemens.com/productcert/html/ssa-831302.html"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-193"}],"source":"secalert@redhat.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-193"}],"source":"nvd@nist.gov","type":"Secondary"}]}
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