CVE-2021-27645

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Source
https://cve.org/CVERecord?id=CVE-2021-27645
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-27645.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-27645
Downstream
Related
Published
2021-02-24T15:15:13.837Z
Modified
2026-04-15T23:59:36.943202631Z
Severity
  • 2.5 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
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.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpe": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "last_affected": "10.0"
                }
            ]
        },
        {
            "cpe": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "last_affected": "33"
                }
            ]
        },
        {
            "cpe": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "last_affected": "34"
                }
            ]
        }
    ]
}
References

Affected packages

Git / sourceware.org/git/glibc.git

Affected ranges

Type
GIT
Repo
https://sourceware.org/git/glibc.git
Events
Introduced
56c86f5dd516284558e106d04b92875d5b623b7a
Last affected
9826b03b747b841f5fc6de2054bf1ef3f5c4bdf3
Database specific 
{
    "cpe": "cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*",
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "2.29"
        },
        {
            "last_affected": "2.33"
        }
    ]
}

Affected versions

Other
changelog-ends-here
glibc-2.*
glibc-2.29
glibc-2.29.9000
glibc-2.30
glibc-2.30.9000
glibc-2.31
glibc-2.31.9000
glibc-2.32
glibc-2.32.9000
glibc-2.33

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-27645.json"