Neos CMS Cross Site Scripting vulnerability
The advisory, in context
Cross Site Scripting (XSS) vulnerability in Neos CMS 8.3.3 allows a remote authenticated attacker to execute arbitrary code via a crafted SVG file uploaded to the neos/management/media component. To make use of this attack vector, the attacker must either be able to upload a maliciously crafted file or coerce someone with the needed access to upload said file to Neos. Even if such a file is uploaded and subsequently delivered, it is possible to use CSP to protect against attacks being executed from such a file.
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.
Earlier releases before 7.3.19
Fixed in 7.3.19
281 explicitly affected versions
3.0.0, 3.0.1, 3.0.10, 3.0.11, 3.0.12, 3.0.13, 3.0.14, 3.0.15, 3.0.16, 3.0.17, 3.0.18, 3.0.19, 3.0.2, 3.0.20, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 3.0.9, 3.1.0, 3.1.1, 3.1.10, 3.1.11, 3.1.12, 3.1.13, 3.1.14, 3.1.15, 3.1.16, 3.1.17, 3.1.18, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.8, 3.1.9, 3.2.0, 3.2.1, 3.2.10, 3.2.11, 3.2.12, 3.2.13, 3.2.14, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 3.2.7, 3.2.8, 3.2.9, 3.3.0, 3.3.1, 3.3.10, 3.3.11, 3.3.12, 3.3.13, 3.3.14, 3.3.15, 3.3.16, 3.3.17, 3.3.18, 3.3.19, 3.3.2, 3.3.20, 3.3.21, 3.3.22, 3.3.23, 3.3.24, 3.3.25, 3.3.26, 3.3.27, 3.3.28, 3.3.29, 3.3.3, 3.3.4, 3.3.5, 3.3.6, 3.3.7, 3.3.8, 3.3.9, 4.0.0, 4.0.1, 4.0.10, 4.0.11, 4.0.12, 4.0.13, 4.0.14, 4.0.15, 4.0.16, 4.0.17, 4.0.18, 4.0.19, 4.0.2, 4.0.20, 4.0.21, 4.0.22, 4.0.23, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.0.8, 4.0.9, 4.1.0, 4.1.1, 4.1.10, 4.1.11, 4.1.12, 4.1.13, 4.1.14, 4.1.15, 4.1.16, 4.1.17, 4.1.18, 4.1.19, 4.1.2, 4.1.20, 4.1.21, 4.1.22, 4.1.3, 4.1.4, 4.1.5, 4.1.6, 4.1.7, 4.1.8, 4.1.9, 4.2.0, 4.2.1, 4.2.10, 4.2.11, 4.2.12, 4.2.13, 4.2.14, 4.2.15, 4.2.16, 4.2.17, 4.2.18, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.7, 4.2.8, 4.2.9, 4.3.0, 4.3.1, 4.3.10, 4.3.11, 4.3.12, 4.3.13, 4.3.14, 4.3.15, 4.3.16, 4.3.17, 4.3.18, 4.3.19, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.3.6, 4.3.7, 4.3.8, 4.3.9, 5.0.0, 5.0.1, 5.0.10, 5.0.11, 5.0.12, 5.0.13, 5.0.14, 5.0.15, 5.0.16, 5.0.17, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.1.0, 5.1.1, 5.1.10, 5.1.11, 5.1.12, 5.1.13, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.1.7, 5.1.8, 5.1.9, 5.2.0, 5.2.1, 5.2.2, 5.2.3, 5.2.4, 5.2.5, 5.2.6, 5.3.0, 5.3.1, 5.3.10, 5.3.11, 5.3.12, 5.3.13, 5.3.14, 5.3.2, 5.3.3, 5.3.4, 5.3.5, 5.3.6, 5.3.7, 5.3.8, 5.3.9, 7.0.0, 7.0.1, 7.0.10, 7.0.11, 7.0.12, 7.0.13, 7.0.2, 7.0.3, 7.0.4, 7.0.5, 7.0.6, 7.0.7, 7.0.8, 7.0.9, 7.1.0, 7.1.1, 7.1.10, 7.1.11, 7.1.2, 7.1.3, 7.1.4, 7.1.5, 7.1.6, 7.1.7, 7.1.8, 7.1.9, 7.2.0, 7.2.1, 7.2.10, 7.2.2, 7.2.3, 7.2.4, 7.2.5, 7.2.6, 7.2.7, 7.2.8, 7.2.9, 7.3.0, 7.3.1, 7.3.10, 7.3.11, 7.3.12, 7.3.13, 7.3.14, 7.3.15, 7.3.16, 7.3.17, 7.3.18, 7.3.2, 7.3.3, 7.3.4, 7.3.5, 7.3.6, 7.3.7, 7.3.8, 7.3.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "7.3.19"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.0.0",
"3.0.1",
"3.0.10",
"3.0.11",
"3.0.12",
"3.0.13",
"3.0.14",
"3.0.15",
"3.0.16",
"3.0.17",
"3.0.18",
"3.0.19",
"3.0.2",
"3.0.20",
"3.0.3",
"3.0.4",
"3.0.5",
"3.0.6",
"3.0.7",
"3.0.8",
"3.0.9",
"3.1.0",
"3.1.1",
"3.1.10",
"3.1.11",
"3.1.12",
"3.1.13",
"3.1.14",
"3.1.15",
"3.1.16",
"3.1.17",
"3.1.18",
"3.1.2",
"3.1.3",
"3.1.4",
"3.1.5",
"3.1.6",
"3.1.7",
"3.1.8",
"3.1.9",
"3.2.0",
"3.2.1",
"3.2.10",
"3.2.11",
"3.2.12",
"3.2.13",
"3.2.14",
"3.2.2",
"3.2.3",
"3.2.4",
"3.2.5",
"3.2.6",
"3.2.7",
"3.2.8",
"3.2.9",
"3.3.0",
"3.3.1",
"3.3.10",
"3.3.11",
"3.3.12",
"3.3.13",
"3.3.14",
"3.3.15",
"3.3.16",
"3.3.17",
"3.3.18",
"3.3.19",
"3.3.2",
"3.3.20",
"3.3.21",
"3.3.22",
"3.3.23",
"3.3.24",
"3.3.25",
"3.3.26",
"3.3.27",
"3.3.28",
"3.3.29",
"3.3.3",
"3.3.4",
"3.3.5",
"3.3.6",
"3.3.7",
"3.3.8",
"3.3.9",
"4.0.0",
"4.0.1",
"4.0.10",
"4.0.11",
"4.0.12",
"4.0.13",
"4.0.14",
"4.0.15",
"4.0.16",
"4.0.17",
"4.0.18",
"4.0.19",
"4.0.2",
"4.0.20",
"4.0.21",
"4.0.22",
"4.0.23",
"4.0.3",
"4.0.4",
"4.0.5",
"4.0.6",
"4.0.7",
"4.0.8",
"4.0.9",
"4.1.0",
"4.1.1",
"4.1.10",
"4.1.11",
"4.1.12",
"4.1.13",
"4.1.14",
"4.1.15",
"4.1.16",
"4.1.17",
"4.1.18",
"4.1.19",
"4.1.2",
"4.1.20",
"4.1.21",
"4.1.22",
"4.1.3",
"4.1.4",
"4.1.5",
"4.1.6",
"4.1.7",
"4.1.8",
"4.1.9",
"4.2.0",
"4.2.1",
"4.2.10",
"4.2.11",
"4.2.12",
"4.2.13",
"4.2.14",
"4.2.15",
"4.2.16",
"4.2.17",
"4.2.18",
"4.2.2",
"4.2.3",
"4.2.4",
"4.2.5",
"4.2.6",
"4.2.7",
"4.2.8",
"4.2.9",
"4.3.0",
"4.3.1",
"4.3.10",
"4.3.11",
"4.3.12",
"4.3.13",
"4.3.14",
"4.3.15",
"4.3.16",
"4.3.17",
"4.3.18",
"4.3.19",
"4.3.2",
"4.3.3",
"4.3.4",
"4.3.5",
"4.3.6",
"4.3.7",
"4.3.8",
"4.3.9",
"5.0.0",
"5.0.1",
"5.0.10",
"5.0.11",
"5.0.12",
"5.0.13",
"5.0.14",
"5.0.15",
"5.0.16",
"5.0.17",
"5.0.2",
"5.0.3",
"5.0.4",
"5.0.5",
"5.0.6",
"5.0.7",
"5.0.8",
"5.0.9",
"5.1.0",
"5.1.1",
"5.1.10",
"5.1.11",
"5.1.12",
"5.1.13",
"5.1.2",
"5.1.3",
"5.1.4",
"5.1.5",
"5.1.6",
"5.1.7",
"5.1.8",
"5.1.9",
"5.2.0",
"5.2.1",
"5.2.2",
"5.2.3",
"5.2.4",
"5.2.5",
"5.2.6",
"5.3.0",
"5.3.1",
"5.3.10",
"5.3.11",
"5.3.12",
"5.3.13",
"5.3.14",
"5.3.2",
"5.3.3",
"5.3.4",
"5.3.5",
"5.3.6",
"5.3.7",
"5.3.8",
"5.3.9",
"7.0.0",
"7.0.1",
"7.0.10",
"7.0.11",
"7.0.12",
"7.0.13",
"7.0.2",
"7.0.3",
"7.0.4",
"7.0.5",
"7.0.6",
"7.0.7",
"7.0.8",
"7.0.9",
"7.1.0",
"7.1.1",
"7.1.10",
"7.1.11",
"7.1.2",
"7.1.3",
"7.1.4",
"7.1.5",
"7.1.6",
"7.1.7",
"7.1.8",
"7.1.9",
"7.2.0",
"7.2.1",
"7.2.10",
"7.2.2",
"7.2.3",
"7.2.4",
"7.2.5",
"7.2.6",
"7.2.7",
"7.2.8",
"7.2.9",
"7.3.0",
"7.3.1",
"7.3.10",
"7.3.11",
"7.3.12",
"7.3.13",
"7.3.14",
"7.3.15",
"7.3.16",
"7.3.17",
"7.3.18",
"7.3.2",
"7.3.3",
"7.3.4",
"7.3.5",
"7.3.6",
"7.3.7",
"7.3.8",
"7.3.9"
]
}From 8.0.0 before 8.0.16
Fixed in 8.0.16
16 explicitly affected versions
8.0.0, 8.0.1, 8.0.10, 8.0.11, 8.0.12, 8.0.13, 8.0.14, 8.0.15, 8.0.2, 8.0.3, 8.0.4, 8.0.5, 8.0.6, 8.0.7, 8.0.8, 8.0.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.0.16"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.0.0",
"8.0.1",
"8.0.10",
"8.0.11",
"8.0.12",
"8.0.13",
"8.0.14",
"8.0.15",
"8.0.2",
"8.0.3",
"8.0.4",
"8.0.5",
"8.0.6",
"8.0.7",
"8.0.8",
"8.0.9"
]
}From 8.1.0 before 8.1.11
Fixed in 8.1.11
11 explicitly affected versions
8.1.0, 8.1.1, 8.1.10, 8.1.2, 8.1.3, 8.1.4, 8.1.5, 8.1.6, 8.1.7, 8.1.8, 8.1.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "8.1.0"
},
{
"fixed": "8.1.11"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.1.0",
"8.1.1",
"8.1.10",
"8.1.2",
"8.1.3",
"8.1.4",
"8.1.5",
"8.1.6",
"8.1.7",
"8.1.8",
"8.1.9"
]
}From 8.2.0 before 8.2.11
Fixed in 8.2.11
11 explicitly affected versions
8.2.0, 8.2.1, 8.2.10, 8.2.2, 8.2.3, 8.2.4, 8.2.5, 8.2.6, 8.2.7, 8.2.8, 8.2.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "8.2.0"
},
{
"fixed": "8.2.11"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.2.0",
"8.2.1",
"8.2.10",
"8.2.2",
"8.2.3",
"8.2.4",
"8.2.5",
"8.2.6",
"8.2.7",
"8.2.8",
"8.2.9"
]
}From 8.3.0 before 8.3.9
Fixed in 8.3.9
9 explicitly affected versions
8.3.0, 8.3.1, 8.3.2, 8.3.3, 8.3.4, 8.3.5, 8.3.6, 8.3.7, 8.3.8
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "8.3.0"
},
{
"fixed": "8.3.9"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.3.0",
"8.3.1",
"8.3.2",
"8.3.3",
"8.3.4",
"8.3.5",
"8.3.6",
"8.3.7",
"8.3.8"
]
}References
- https://nvd.nist.gov/vuln/detail/CVE-2023-37611
- https://github.com/neos/neos-development-collection/issues/4833
- https://github.com/neos/neos-development-collection/pull/4812
- https://github.com/neos/neos-development-collection/commit/4ac0df04d2e44e164e95887b466075dde3f04045
- https://cheatsheetseries.owasp.org/cheatsheets/Content_Security_Policy_Cheat_Sheet.html
- https://digi.ninja/blog/svg_xss.php
- https://github.com/neos/neos-development-collection
- https://github.com/neos/neos-ui/releases/tag/8.3.4
- https://rodelllemit.medium.com/stored-xss-in-neo-cms-8-3-3-9bd1cb973c5b