UBUNTU-CVE-2021-27645

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2021-27645
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-27645.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-27645
Related
Published
2021-02-24T15:15:00Z
Modified
2021-02-24T15:15:00Z
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.

References

Affected packages

Ubuntu:20.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.31-0ubuntu9.7?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.31-0ubuntu9.7

Affected versions

2.*

2.30-0ubuntu2
2.30-0ubuntu3
2.31-0ubuntu5
2.31-0ubuntu6
2.31-0ubuntu7
2.31-0ubuntu9
2.31-0ubuntu9.1
2.31-0ubuntu9.2
2.31-0ubuntu9.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "libc6-s390-dbgsym": "2.31-0ubuntu9.7",
            "libc6-dev": "2.31-0ubuntu9.7",
            "libc6-dev-s390": "2.31-0ubuntu9.7",
            "libc6-dev-i386": "2.31-0ubuntu9.7",
            "locales-all": "2.31-0ubuntu9.7",
            "libc6-amd64-dbgsym": "2.31-0ubuntu9.7",
            "libc6-pic": "2.31-0ubuntu9.7",
            "glibc-source": "2.31-0ubuntu9.7",
            "libc6-dev-amd64": "2.31-0ubuntu9.7",
            "nscd-dbgsym": "2.31-0ubuntu9.7",
            "nscd": "2.31-0ubuntu9.7",
            "glibc-doc": "2.31-0ubuntu9.7",
            "libc6-armel": "2.31-0ubuntu9.7",
            "libc6-armel-dbgsym": "2.31-0ubuntu9.7",
            "libc6": "2.31-0ubuntu9.7",
            "libc6-dbg": "2.31-0ubuntu9.7",
            "libc-bin": "2.31-0ubuntu9.7",
            "libc6-i386": "2.31-0ubuntu9.7",
            "libc6-udeb": "2.31-0ubuntu9.7",
            "libc6-dev-x32": "2.31-0ubuntu9.7",
            "libc-bin-dbgsym": "2.31-0ubuntu9.7",
            "libc-dev-bin": "2.31-0ubuntu9.7",
            "libc6-amd64": "2.31-0ubuntu9.7",
            "libc6-x32": "2.31-0ubuntu9.7",
            "libc6-prof": "2.31-0ubuntu9.7",
            "libc6-s390": "2.31-0ubuntu9.7",
            "libc6-dev-armel": "2.31-0ubuntu9.7",
            "libc6-i386-dbgsym": "2.31-0ubuntu9.7",
            "locales": "2.31-0ubuntu9.7",
            "libc6-lse": "2.31-0ubuntu9.7",
            "libc-dev-bin-dbgsym": "2.31-0ubuntu9.7",
            "libc6-x32-dbgsym": "2.31-0ubuntu9.7"
        }
    ]
}