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{"affected_release": [{"advisory": "RHSA-2021:4358", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "glibc-0:2.28-164.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-09T00:00:00Z"}, {"advisory": "RHSA-2021:4358", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "glibc-0:2.28-164.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-09T00:00:00Z"}], "bugzilla": {"description": "glibc: Use-after-free in addgetnetgrentX function in netgroupcache.c", "id": "1932589", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1932589"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L", "status": "verified"}, "cwe": "CWE-416", "details": ["The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6) 2.29 through 2.33, when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system. This is related to netgroupcache.c.", "The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6), when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system."], "name": "CVE-2021-27645", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "compat-glibc", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "compat-glibc", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-02-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-27645\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-27645"], "statement": "This is a local crash in nscd causing a performance penalty. It is constrained by needing a netgroup request to have a response larger than 1K to cause the double-free crash. Therefore this is not a full denial of service.", "threat_severity": "Low", "upstream_fix": "glibc 2.34"}