{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "state": "PUBLISHED", "cveId": "CVE-2021-3999", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "dateUpdated": "2025-12-02T20:54:34.966Z", "dateReserved": "2021-11-22T00:00:00.000Z", "datePublished": "2022-08-24T00:00:00.000Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2022-11-04T00:00:00.000Z" }, "descriptions": [ { "lang": "en", "value": "A flaw was found in glibc. 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." } ], "affected": [ { "vendor": "n/a", "product": "glibc", "versions": [ { "version": "Fixed in glibc v2.31 and above.", "status": "affected" } ] } ], "references": [ { "url": "https://www.openwall.com/lists/oss-security/2022/01/24/4" }, { "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=28769" }, { "url": "https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e" }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2024637" }, { "url": "https://access.redhat.com/security/cve/CVE-2021-3999" }, { "url": "https://security-tracker.debian.org/tracker/CVE-2021-3999" }, { "name": "[debian-lts-announce] 20221017 [SECURITY] [DLA 3152-1] glibc security update", "tags": [ "mailing-list" ], "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html" }, { "url": "https://security.netapp.com/advisory/ntap-20221104-0001/" } ], "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-193 - Off-by-one Error", "cweId": "CWE-193" } ] } ] }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:16:03.318Z" }, "title": "CVE Program Container", "references": [ { "url": "https://www.openwall.com/lists/oss-security/2022/01/24/4", "tags": [ "x_transferred" ] }, { "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=28769", "tags": [ "x_transferred" ] }, { "url": "https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e", "tags": [ "x_transferred" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2024637", "tags": [ "x_transferred" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2021-3999", "tags": [ "x_transferred" ] }, { "url": "https://security-tracker.debian.org/tracker/CVE-2021-3999", "tags": [ "x_transferred" ] }, { "name": "[debian-lts-announce] 20221017 [SECURITY] [DLA 3152-1] glibc security update", "tags": [ "mailing-list", "x_transferred" ], "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html" }, { "url": "https://security.netapp.com/advisory/ntap-20221104-0001/", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2025-12-02T20:54:28.821189Z", "id": "CVE-2021-3999", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-12-02T20:54:34.966Z" } } ] } }