Contao Insert tag injection in forms
The advisory, in context
Impact
It is possible to inject insert tags in front end forms which will be replaced when the page is rendered.
Patches
Update to Contao 4.4.52, 4.9.6 or 4.10.1.
Workarounds
Disable the front end login form and do not use form fields with array keys such as fieldname[].
References
https://contao.org/en/security-advisories/insert-tag-injection-in-forms
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 4.4.52
Fixed in 4.4.52
87 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, 4.4.6, 4.4.7, 4.4.8, 4.4.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.4.52"
}
],
"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",
"4.4.6",
"4.4.7",
"4.4.8",
"4.4.9"
]
}From 4.5.0 before 4.9.6
Fixed in 4.9.6
64 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, 4.9.2, 4.9.3, 4.9.4, 4.9.5
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.5.0"
},
{
"fixed": "4.9.6"
}
],
"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",
"4.9.2",
"4.9.3",
"4.9.4",
"4.9.5"
]
}From 4.0.0 before 4.4.52
Fixed in 4.4.52
30 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
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.4.52"
}
],
"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"
]
}From 4.5.0 before 4.9.6
Fixed in 4.9.6
48 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, 4.9.2, 4.9.3, 4.9.4, 4.9.5
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.5.0"
},
{
"fixed": "4.9.6"
}
],
"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",
"4.9.2",
"4.9.3",
"4.9.4",
"4.9.5"
]
}From 4.10.0 before 4.10.1
Fixed in 4.10.1
1 explicitly affected versions
4.10.0
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.10.0"
},
{
"fixed": "4.10.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.10.0"
]
}From 4.10.0 before 4.10.1
Fixed in 4.10.1
1 explicitly affected versions
4.10.0
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.10.0"
},
{
"fixed": "4.10.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.10.0"
]
}References
- https://github.com/contao/contao/security/advisories/GHSA-f7wm-x4gw-6m23
- https://nvd.nist.gov/vuln/detail/CVE-2020-25768
- https://community.contao.org/en/forumdisplay.php?4-Announcements
- https://contao.org/en/security-advisories/insert-tag-injection-in-forms.html
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2020-25768.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2020-25768.yaml
- https://github.com/contao/contao