{ "containers": { "cna": { "affected": [ { "product": "kernel", "vendor": "n/a", "versions": [ { "status": "affected", "version": "Not Known" } ] } ], "descriptions": [ { "lang": "en", "value": "A flaw was found in the way the dumpable flag setting was handled when certain SUID binaries executed its descendants. The prerequisite is a SUID binary that sets real UID equal to effective UID, and real GID equal to effective GID. The descendant will then have a dumpable value set to 1. As a result, if the descendant process crashes and core_pattern is set to a relative value, its core dump is stored in the current directory with uid:gid permissions. An unprivileged local user with eligible root SUID binary could use this flaw to place core dumps into root-owned directories, potentially resulting in escalation of privileges." } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-284", "description": "CWE-284 - Improper Access Control", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2022-08-26T15:25:39.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://www.openwall.com/lists/oss-security/2021/10/20/2" }, { "tags": [ "x_refsource_MISC" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2015046" }, { "tags": [ "x_refsource_MISC" ], "url": "https://access.redhat.com/security/cve/CVE-2021-3864" }, { "tags": [ "x_refsource_MISC" ], "url": "https://lore.kernel.org/all/20211221021744.864115-1-longman%40redhat.com/" }, { "tags": [ "x_refsource_MISC" ], "url": "https://lore.kernel.org/lkml/20211228170910.623156-1-wander%40redhat.com/" }, { "tags": [ "x_refsource_MISC" ], "url": "https://lore.kernel.org/all/20211226150310.GA992%401wt.eu/" }, { "tags": [ "x_refsource_MISC" ], "url": "https://security-tracker.debian.org/tracker/CVE-2021-3864" } ] }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:09:09.586Z" }, "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://www.openwall.com/lists/oss-security/2021/10/20/2" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2015046" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://access.redhat.com/security/cve/CVE-2021-3864" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://lore.kernel.org/all/20211221021744.864115-1-longman%40redhat.com/" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://lore.kernel.org/lkml/20211228170910.623156-1-wander%40redhat.com/" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://lore.kernel.org/all/20211226150310.GA992%401wt.eu/" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://security-tracker.debian.org/tracker/CVE-2021-3864" } ] } ] }, "cveMetadata": { "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2021-3864", "datePublished": "2022-08-26T15:25:39.000Z", "dateReserved": "2021-10-06T00:00:00.000Z", "dateUpdated": "2024-08-03T17:09:09.586Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }