UBUNTU-CVE-2022-42917

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Source
https://ubuntu.com/security/CVE-2022-42917
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-42917.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2022-42917
Upstream
Published
2026-09-14T00:16:00Z
Modified
2026-09-16T11:11:10Z
Severity
  • 6.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In FRRouting FRR before 8.5, the service user (usually frr) can escalate its privileges to root by monitoring the configuration directory (/etc/frr) and replacing config files upon creation with, for example, symlinks to change the ownership of arbitrary files. This is a TOCTOU Race Condition caused by a combination of touch and chown.

References

Affected packages

Ubuntu:20.04:LTS
quagga

Package

Name
quagga
Purl
pkg:deb/ubuntu/quagga?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.2.4-4build1
1.2.4-4ubuntu0.1
1.2.4-4ubuntu0.4
1.2.4-4ubuntu0.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "quagga",
            "binary_version": "1.2.4-4ubuntu0.5"
        },
        {
            "binary_name": "quagga-bgpd",
            "binary_version": "1.2.4-4ubuntu0.5"
        },
        {
            "binary_name": "quagga-core",
            "binary_version": "1.2.4-4ubuntu0.5"
        },
        {
            "binary_name": "quagga-isisd",
            "binary_version": "1.2.4-4ubuntu0.5"
        },
        {
            "binary_name": "quagga-ospf6d",
            "binary_version": "1.2.4-4ubuntu0.5"
        },
        {
            "binary_name": "quagga-ospfd",
            "binary_version": "1.2.4-4ubuntu0.5"
        },
        {
            "binary_name": "quagga-pimd",
            "binary_version": "1.2.4-4ubuntu0.5"
        },
        {
            "binary_name": "quagga-ripd",
            "binary_version": "1.2.4-4ubuntu0.5"
        },
        {
            "binary_name": "quagga-ripngd",
            "binary_version": "1.2.4-4ubuntu0.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-42917.json"
Ubuntu:22.04:LTS
frr

Package

Name
frr
Purl
pkg:deb/ubuntu/frr?arch=source&distro=jammy

Affected ranges

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

Affected versions

7.*
7.5.1-1.1
8.*
8.1-1
8.1-1ubuntu1
8.1-1ubuntu1.1
8.1-1ubuntu1.2
8.1-1ubuntu1.3
8.1-1ubuntu1.4
8.1-1ubuntu1.5
8.1-1ubuntu1.6
8.1-1ubuntu1.7
8.1-1ubuntu1.8
8.1-1ubuntu1.9
8.1-1ubuntu1.10
8.1-1ubuntu1.11
8.1-1ubuntu1.13
8.1-1ubuntu1.14
8.1-1ubuntu1.15
8.1-1ubuntu1.16

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "frr",
            "binary_version": "8.1-1ubuntu1.16"
        },
        {
            "binary_name": "frr-pythontools",
            "binary_version": "8.1-1ubuntu1.16"
        },
        {
            "binary_name": "frr-rpki-rtrlib",
            "binary_version": "8.1-1ubuntu1.16"
        },
        {
            "binary_name": "frr-snmp",
            "binary_version": "8.1-1ubuntu1.16"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-42917.json"
Ubuntu:24.04:LTS
frr

Package

Name
frr
Purl
pkg:deb/ubuntu/frr?arch=source&distro=noble

Affected ranges

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

Affected versions

8.*
8.4.4-1.1ubuntu1
8.4.4-1.1ubuntu3
8.4.4-1.1ubuntu4
8.4.4-1.1ubuntu5
8.4.4-1.1ubuntu6
8.4.4-1.1ubuntu6.1
8.4.4-1.1ubuntu6.2
8.4.4-1.1ubuntu6.3
8.4.4-1.1ubuntu6.4
8.4.4-1.1ubuntu6.5
8.4.4-1.1ubuntu6.6
8.4.4-1.1ubuntu6.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "frr",
            "binary_version": "8.4.4-1.1ubuntu6.7"
        },
        {
            "binary_name": "frr-pythontools",
            "binary_version": "8.4.4-1.1ubuntu6.7"
        },
        {
            "binary_name": "frr-rpki-rtrlib",
            "binary_version": "8.4.4-1.1ubuntu6.7"
        },
        {
            "binary_name": "frr-snmp",
            "binary_version": "8.4.4-1.1ubuntu6.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-42917.json"
Ubuntu:26.04:LTS
frr

Package

Name
frr
Purl
pkg:deb/ubuntu/frr?arch=source&distro=resolute

Affected ranges

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

Affected versions

10.*
10.4.1-3ubuntu1
10.4.1-3ubuntu2
10.5.1-1ubuntu1
10.5.1-1ubuntu2
10.5.1-1ubuntu3
10.5.1-1ubuntu4
10.5.1-1ubuntu4.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "frr",
            "binary_version": "10.5.1-1ubuntu4.1"
        },
        {
            "binary_name": "frr-pythontools",
            "binary_version": "10.5.1-1ubuntu4.1"
        },
        {
            "binary_name": "frr-rpki-rtrlib",
            "binary_version": "10.5.1-1ubuntu4.1"
        },
        {
            "binary_name": "frr-snmp",
            "binary_version": "10.5.1-1ubuntu4.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-42917.json"
Ubuntu:Pro:16.04:LTS
quagga

Package

Name
quagga
Purl
pkg:deb/ubuntu/quagga?arch=source&distro=esm-infra%2Fxenial

Affected ranges

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

Affected versions

0.*
0.99.24.1-2
0.99.24.1-2ubuntu1
0.99.24.1-2ubuntu1.1
0.99.24.1-2ubuntu1.2
0.99.24.1-2ubuntu1.3
0.99.24.1-2ubuntu1.4
0.99.24.1-2ubuntu1.4+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "quagga",
            "binary_version": "0.99.24.1-2ubuntu1.4+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-42917.json"
Ubuntu:Pro:18.04:LTS
quagga

Package

Name
quagga
Purl
pkg:deb/ubuntu/quagga?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

1.*
1.1.1-3
1.1.1-3ubuntu1
1.2.2-1
1.2.2-1ubuntu1
1.2.4-1
1.2.4-1ubuntu0.1~esm1
1.2.4-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "quagga",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "quagga-bgpd",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "quagga-core",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "quagga-isisd",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "quagga-ospf6d",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "quagga-ospfd",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "quagga-pimd",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "quagga-ripd",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "quagga-ripngd",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-42917.json"
Ubuntu:Pro:20.04:LTS
frr

Package

Name
frr
Purl
pkg:deb/ubuntu/frr?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

6.*
6.0.2-2build2
7.*
7.2-1ubuntu1
7.2-1ubuntu2
7.2.1-1
7.2.1-1ubuntu0.1
7.2.1-1ubuntu0.2
7.2.1-1ubuntu0.2+esm1
7.2.1-1ubuntu0.2+esm2
7.2.1-1ubuntu0.2+esm3
7.2.1-1ubuntu0.2+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "frr",
            "binary_version": "7.2.1-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "frr-pythontools",
            "binary_version": "7.2.1-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "frr-rpki-rtrlib",
            "binary_version": "7.2.1-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "frr-snmp",
            "binary_version": "7.2.1-1ubuntu0.2+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-42917.json"