Privilege escalation via form generator
The advisory, in context
Impact
It is possible for untrusted users to gain administrator rights with the form generator.
Installations are only affected if there are untrusted back end users with access to the form generator.
Patches
Update to Contao 4.4.56, 4.9.18 or 4.11.7.
Workarounds
Disable the form generator or disable the login for untrusted back end users.
References
https://contao.org/en/security-advisories/privilege-escalation-with-the-form-generator
For more information
If you have any questions or comments about this advisory, open an issue in contao/contao.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
From 4.0.0 before 4.4.56
Fixed in 4.4.56
91 explicitly affected versions
4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.1.0, 4.1.0-RC1, 4.1.0-beta1, 4.1.1, 4.1.2, 4.1.3, 4.2.0, 4.2.0-RC1, 4.2.0-beta1, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.3.0, 4.3.0-RC1, 4.3.1, 4.3.10, 4.3.11, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.3.6, 4.3.7, 4.3.8, 4.3.9, 4.4.0, 4.4.0-RC1, 4.4.0-RC2, 4.4.0-beta1, 4.4.1, 4.4.10, 4.4.11, 4.4.12, 4.4.13, 4.4.14, 4.4.15, 4.4.16, 4.4.17, 4.4.18, 4.4.19, 4.4.2, 4.4.20, 4.4.21, 4.4.22, 4.4.23, 4.4.24, 4.4.25, 4.4.26, 4.4.27, 4.4.28, 4.4.29, 4.4.3, 4.4.30, 4.4.31, 4.4.32, 4.4.33, 4.4.34, 4.4.35, 4.4.36, 4.4.37, 4.4.38, 4.4.39, 4.4.4, 4.4.40, 4.4.41, 4.4.42, 4.4.43, 4.4.44, 4.4.45, 4.4.46, 4.4.47, 4.4.48, 4.4.49, 4.4.5, 4.4.50, 4.4.51, 4.4.52, 4.4.53, 4.4.54, 4.4.55, 4.4.6, 4.4.7, 4.4.8, 4.4.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.4.56"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.0.0",
"4.0.1",
"4.0.2",
"4.0.3",
"4.0.4",
"4.1.0",
"4.1.0-RC1",
"4.1.0-beta1",
"4.1.1",
"4.1.2",
"4.1.3",
"4.2.0",
"4.2.0-RC1",
"4.2.0-beta1",
"4.2.1",
"4.2.2",
"4.2.3",
"4.2.4",
"4.2.5",
"4.3.0",
"4.3.0-RC1",
"4.3.1",
"4.3.10",
"4.3.11",
"4.3.2",
"4.3.3",
"4.3.4",
"4.3.5",
"4.3.6",
"4.3.7",
"4.3.8",
"4.3.9",
"4.4.0",
"4.4.0-RC1",
"4.4.0-RC2",
"4.4.0-beta1",
"4.4.1",
"4.4.10",
"4.4.11",
"4.4.12",
"4.4.13",
"4.4.14",
"4.4.15",
"4.4.16",
"4.4.17",
"4.4.18",
"4.4.19",
"4.4.2",
"4.4.20",
"4.4.21",
"4.4.22",
"4.4.23",
"4.4.24",
"4.4.25",
"4.4.26",
"4.4.27",
"4.4.28",
"4.4.29",
"4.4.3",
"4.4.30",
"4.4.31",
"4.4.32",
"4.4.33",
"4.4.34",
"4.4.35",
"4.4.36",
"4.4.37",
"4.4.38",
"4.4.39",
"4.4.4",
"4.4.40",
"4.4.41",
"4.4.42",
"4.4.43",
"4.4.44",
"4.4.45",
"4.4.46",
"4.4.47",
"4.4.48",
"4.4.49",
"4.4.5",
"4.4.50",
"4.4.51",
"4.4.52",
"4.4.53",
"4.4.54",
"4.4.55",
"4.4.6",
"4.4.7",
"4.4.8",
"4.4.9"
]
}From 4.5.0 before 4.9.18
Fixed in 4.9.18
76 explicitly affected versions
4.5.0, 4.5.1, 4.5.10, 4.5.11, 4.5.12, 4.5.13, 4.5.14, 4.5.2, 4.5.3, 4.5.4, 4.5.5, 4.5.6, 4.5.7, 4.5.8, 4.5.9, 4.6.0, 4.6.0-RC1, 4.6.0-RC2, 4.6.0-RC3, 4.6.1, 4.6.10, 4.6.11, 4.6.12, 4.6.13, 4.6.14, 4.6.2, 4.6.3, 4.6.4, 4.6.5, 4.6.6, 4.6.7, 4.6.8, 4.6.9, 4.7.0, 4.7.0-RC1, 4.7.0-RC2, 4.7.0-RC3, 4.7.0-RC4, 4.7.1, 4.7.2, 4.7.3, 4.7.4, 4.7.5, 4.7.6, 4.7.7, 4.8.0, 4.8.0-RC1, 4.8.0-RC2, 4.8.1, 4.8.2, 4.8.3, 4.8.4, 4.8.5, 4.8.6, 4.8.7, 4.8.8, 4.9.0, 4.9.0-RC1, 4.9.0-RC2, 4.9.1, 4.9.10, 4.9.11, 4.9.12, 4.9.13, 4.9.14, 4.9.15, 4.9.16, 4.9.17, 4.9.2, 4.9.3, 4.9.4, 4.9.5, 4.9.6, 4.9.7, 4.9.8, 4.9.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.5.0"
},
{
"fixed": "4.9.18"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.5.0",
"4.5.1",
"4.5.10",
"4.5.11",
"4.5.12",
"4.5.13",
"4.5.14",
"4.5.2",
"4.5.3",
"4.5.4",
"4.5.5",
"4.5.6",
"4.5.7",
"4.5.8",
"4.5.9",
"4.6.0",
"4.6.0-RC1",
"4.6.0-RC2",
"4.6.0-RC3",
"4.6.1",
"4.6.10",
"4.6.11",
"4.6.12",
"4.6.13",
"4.6.14",
"4.6.2",
"4.6.3",
"4.6.4",
"4.6.5",
"4.6.6",
"4.6.7",
"4.6.8",
"4.6.9",
"4.7.0",
"4.7.0-RC1",
"4.7.0-RC2",
"4.7.0-RC3",
"4.7.0-RC4",
"4.7.1",
"4.7.2",
"4.7.3",
"4.7.4",
"4.7.5",
"4.7.6",
"4.7.7",
"4.8.0",
"4.8.0-RC1",
"4.8.0-RC2",
"4.8.1",
"4.8.2",
"4.8.3",
"4.8.4",
"4.8.5",
"4.8.6",
"4.8.7",
"4.8.8",
"4.9.0",
"4.9.0-RC1",
"4.9.0-RC2",
"4.9.1",
"4.9.10",
"4.9.11",
"4.9.12",
"4.9.13",
"4.9.14",
"4.9.15",
"4.9.16",
"4.9.17",
"4.9.2",
"4.9.3",
"4.9.4",
"4.9.5",
"4.9.6",
"4.9.7",
"4.9.8",
"4.9.9"
]
}From 4.10.0 before 4.11.7
Fixed in 4.11.7
17 explicitly affected versions
4.10.0, 4.10.1, 4.10.2, 4.10.3, 4.10.4, 4.10.5, 4.10.6, 4.10.7, 4.11.0, 4.11.0-RC1, 4.11.0-RC2, 4.11.1, 4.11.2, 4.11.3, 4.11.4, 4.11.5, 4.11.6
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.10.0"
},
{
"fixed": "4.11.7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.10.0",
"4.10.1",
"4.10.2",
"4.10.3",
"4.10.4",
"4.10.5",
"4.10.6",
"4.10.7",
"4.11.0",
"4.11.0-RC1",
"4.11.0-RC2",
"4.11.1",
"4.11.2",
"4.11.3",
"4.11.4",
"4.11.5",
"4.11.6"
]
}From 4.0.0 before 4.4.56
Fixed in 4.4.56
34 explicitly affected versions
4.4.22, 4.4.23, 4.4.24, 4.4.25, 4.4.26, 4.4.27, 4.4.28, 4.4.29, 4.4.30, 4.4.31, 4.4.32, 4.4.33, 4.4.34, 4.4.35, 4.4.36, 4.4.37, 4.4.38, 4.4.39, 4.4.40, 4.4.41, 4.4.42, 4.4.43, 4.4.44, 4.4.45, 4.4.46, 4.4.47, 4.4.48, 4.4.49, 4.4.50, 4.4.51, 4.4.52, 4.4.53, 4.4.54, 4.4.55
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.4.56"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.4.22",
"4.4.23",
"4.4.24",
"4.4.25",
"4.4.26",
"4.4.27",
"4.4.28",
"4.4.29",
"4.4.30",
"4.4.31",
"4.4.32",
"4.4.33",
"4.4.34",
"4.4.35",
"4.4.36",
"4.4.37",
"4.4.38",
"4.4.39",
"4.4.40",
"4.4.41",
"4.4.42",
"4.4.43",
"4.4.44",
"4.4.45",
"4.4.46",
"4.4.47",
"4.4.48",
"4.4.49",
"4.4.50",
"4.4.51",
"4.4.52",
"4.4.53",
"4.4.54",
"4.4.55"
]
}From 4.5.0 before 4.9.18
Fixed in 4.9.18
60 explicitly affected versions
4.5.13, 4.5.14, 4.6.0, 4.6.1, 4.6.10, 4.6.11, 4.6.12, 4.6.13, 4.6.14, 4.6.2, 4.6.3, 4.6.4, 4.6.5, 4.6.6, 4.6.7, 4.6.8, 4.6.9, 4.7.0, 4.7.0-RC1, 4.7.0-RC2, 4.7.0-RC3, 4.7.0-RC4, 4.7.1, 4.7.2, 4.7.3, 4.7.4, 4.7.5, 4.7.6, 4.7.7, 4.8.0, 4.8.0-RC1, 4.8.0-RC2, 4.8.1, 4.8.2, 4.8.3, 4.8.4, 4.8.5, 4.8.6, 4.8.7, 4.8.8, 4.9.0, 4.9.0-RC1, 4.9.0-RC2, 4.9.1, 4.9.10, 4.9.11, 4.9.12, 4.9.13, 4.9.14, 4.9.15, 4.9.16, 4.9.17, 4.9.2, 4.9.3, 4.9.4, 4.9.5, 4.9.6, 4.9.7, 4.9.8, 4.9.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.5.0"
},
{
"fixed": "4.9.18"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.5.13",
"4.5.14",
"4.6.0",
"4.6.1",
"4.6.10",
"4.6.11",
"4.6.12",
"4.6.13",
"4.6.14",
"4.6.2",
"4.6.3",
"4.6.4",
"4.6.5",
"4.6.6",
"4.6.7",
"4.6.8",
"4.6.9",
"4.7.0",
"4.7.0-RC1",
"4.7.0-RC2",
"4.7.0-RC3",
"4.7.0-RC4",
"4.7.1",
"4.7.2",
"4.7.3",
"4.7.4",
"4.7.5",
"4.7.6",
"4.7.7",
"4.8.0",
"4.8.0-RC1",
"4.8.0-RC2",
"4.8.1",
"4.8.2",
"4.8.3",
"4.8.4",
"4.8.5",
"4.8.6",
"4.8.7",
"4.8.8",
"4.9.0",
"4.9.0-RC1",
"4.9.0-RC2",
"4.9.1",
"4.9.10",
"4.9.11",
"4.9.12",
"4.9.13",
"4.9.14",
"4.9.15",
"4.9.16",
"4.9.17",
"4.9.2",
"4.9.3",
"4.9.4",
"4.9.5",
"4.9.6",
"4.9.7",
"4.9.8",
"4.9.9"
]
}From 4.10.0 before 4.11.7
Fixed in 4.11.7
17 explicitly affected versions
4.10.0, 4.10.1, 4.10.2, 4.10.3, 4.10.4, 4.10.5, 4.10.6, 4.10.7, 4.11.0, 4.11.0-RC1, 4.11.0-RC2, 4.11.1, 4.11.2, 4.11.3, 4.11.4, 4.11.5, 4.11.6
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.10.0"
},
{
"fixed": "4.11.7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.10.0",
"4.10.1",
"4.10.2",
"4.10.3",
"4.10.4",
"4.10.5",
"4.10.6",
"4.10.7",
"4.11.0",
"4.11.0-RC1",
"4.11.0-RC2",
"4.11.1",
"4.11.2",
"4.11.3",
"4.11.4",
"4.11.5",
"4.11.6"
]
}References
- https://github.com/contao/contao/security/advisories/GHSA-hq5m-mqmx-fw6m
- https://nvd.nist.gov/vuln/detail/CVE-2021-37627
- https://contao.org/en/security-advisories/privilege-escalation-with-the-form-generator.html
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2021-37627.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2021-37627.yaml
- https://github.com/contao/contao