UBUNTU-CVE-2023-4806

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Source
https://ubuntu.com/security/CVE-2023-4806
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-4806.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2023-4806
Upstream
Downstream
Related
Published
2023-09-18T17:15:00Z
Modified
2025-07-16T07:34:59.650595Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the nss_gethostbyname2_r and _nss_getcanonnamer hooks without implementing the nss*gethostbyname3r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AFINET6 address family with AICANONNAME, AIALL and AIV4MAPPED as flags.

References

Affected packages

Ubuntu:Pro:14.04:LTS / eglibc

Package

Name
eglibc
Purl
pkg:deb/ubuntu/eglibc@2.19-0ubuntu6.15+esm4?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.17-93ubuntu4
2.18-0ubuntu1
2.18-0ubuntu2
2.18-0ubuntu4
2.18-0ubuntu5
2.18-0ubuntu6
2.18-0ubuntu7
2.19-0ubuntu2
2.19-0ubuntu3
2.19-0ubuntu4
2.19-0ubuntu5
2.19-0ubuntu6
2.19-0ubuntu6.1
2.19-0ubuntu6.3
2.19-0ubuntu6.4
2.19-0ubuntu6.5
2.19-0ubuntu6.6
2.19-0ubuntu6.7
2.19-0ubuntu6.8
2.19-0ubuntu6.9
2.19-0ubuntu6.10
2.19-0ubuntu6.11
2.19-0ubuntu6.13
2.19-0ubuntu6.14
2.19-0ubuntu6.15
2.19-0ubuntu6.15+esm1
2.19-0ubuntu6.15+esm2
2.19-0ubuntu6.15+esm3
2.19-0ubuntu6.15+esm4

Ecosystem specific 

{
    "priority_reason": "No known NSS modules expose the vulnerability"
}

Ubuntu:Pro:16.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.23-0ubuntu11.3+esm5?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.23-0ubuntu11.3+esm5

Affected versions

2.*

2.21-0ubuntu4
2.21-0ubuntu5
2.21-0ubuntu6
2.23-0ubuntu1
2.23-0ubuntu2
2.23-0ubuntu3
2.23-0ubuntu4
2.23-0ubuntu5
2.23-0ubuntu6
2.23-0ubuntu7
2.23-0ubuntu9
2.23-0ubuntu10
2.23-0ubuntu11
2.23-0ubuntu11.2
2.23-0ubuntu11.3
2.23-0ubuntu11.3+esm1
2.23-0ubuntu11.3+esm2
2.23-0ubuntu11.3+esm3

Ecosystem specific 

{
    "priority_reason": "No known NSS modules expose the vulnerability",
    "binaries": [
        {
            "binary_name": "glibc-doc",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "glibc-source",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc-bin-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc-dev-bin-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-amd64-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-armel",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-armel-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-dbg",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-i386-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-pic",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-s390-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-udeb",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-udeb-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "libc6-x32-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "multiarch-support",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        },
        {
            "binary_name": "nscd-dbgsym",
            "binary_version": "2.23-0ubuntu11.3+esm5"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:18.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.27-3ubuntu1.6+esm1?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.27-3ubuntu1.6+esm1

Affected versions

2.*

2.26-0ubuntu2
2.26-0ubuntu2.1
2.27-0ubuntu2
2.27-0ubuntu3
2.27-3ubuntu1
2.27-3ubuntu1.2
2.27-3ubuntu1.3
2.27-3ubuntu1.4
2.27-3ubuntu1.5
2.27-3ubuntu1.6

Ecosystem specific 

{
    "priority_reason": "No known NSS modules expose the vulnerability",
    "binaries": [
        {
            "binary_name": "glibc-doc",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "glibc-source",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc-bin-dbgsym",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc-dev-bin-dbgsym",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-amd64-dbgsym",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-armel",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-armel-dbgsym",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-dbg",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-i386-dbgsym",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-lse",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-pic",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-s390-dbgsym",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-udeb",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "libc6-x32-dbgsym",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "multiarch-support",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        },
        {
            "binary_name": "nscd-dbgsym",
            "binary_version": "2.27-3ubuntu1.6+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:20.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.31-0ubuntu9.14?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.31-0ubuntu9.14

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
2.31-0ubuntu9.7
2.31-0ubuntu9.9
2.31-0ubuntu9.12

Ecosystem specific 

{
    "priority_reason": "No known NSS modules expose the vulnerability",
    "binaries": [
        {
            "binary_name": "glibc-doc",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "glibc-source",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc-bin-dbgsym",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc-dev-bin-dbgsym",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-amd64-dbgsym",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-armel",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-armel-dbgsym",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-dbg",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-i386-dbgsym",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-lse",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-pic",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-prof",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-s390-dbgsym",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-udeb",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "libc6-x32-dbgsym",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.31-0ubuntu9.14"
        },
        {
            "binary_name": "nscd-dbgsym",
            "binary_version": "2.31-0ubuntu9.14"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.35-0ubuntu3.5?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.35-0ubuntu3.5

Affected versions

2.*

2.34-0ubuntu3
2.35-0ubuntu1
2.35-0ubuntu3
2.35-0ubuntu3.1
2.35-0ubuntu3.3
2.35-0ubuntu3.4

Ecosystem specific 

{
    "priority_reason": "No known NSS modules expose the vulnerability",
    "binaries": [
        {
            "binary_name": "glibc-doc",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "glibc-source",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc-bin-dbgsym",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc-dev-bin-dbgsym",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc-devtools",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc-devtools-dbgsym",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-amd64-dbgsym",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-dbg",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-i386-dbgsym",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-prof",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-s390-dbgsym",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "libc6-x32-dbgsym",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.35-0ubuntu3.5"
        },
        {
            "binary_name": "nscd-dbgsym",
            "binary_version": "2.35-0ubuntu3.5"
        }
    ],
    "availability": "No subscription required"
}