gsd-2021-41270
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony versions 4.1.0 before 4.4.35 and versions 5.0.0 before 5.3.12 are vulnerable to CSV injection, also known as formula injection. In Symfony 4.1, maintainers added the opt-in `csv_escape_formulas` option in the `CsvEncoder`, to prefix all cells starting with `=`, `+`, `-` or `@` with a tab `\t`. Since then, OWASP added 2 chars in that list: Tab (0x09) and Carriage return (0x0D). This makes the previous prefix char (Tab `\t`) part of the vulnerable characters, and OWASP suggests using the single quote `'` for prefixing the value. Starting with versions 4.4.34 and 5.3.12, Symfony now follows the OWASP recommendations and uses the single quote `'` to prefix formulas and add the prefix to cells starting by `\t`, `\r` as well as `=`, `+`, `-` and `@`.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-41270",
"description": "Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony versions 4.1.0 before 4.4.35 and versions 5.0.0 before 5.3.12 are vulnerable to CSV injection, also known as formula injection. In Symfony 4.1, maintainers added the opt-in `csv_escape_formulas` option in the `CsvEncoder`, to prefix all cells starting with `=`, `+`, `-` or `@` with a tab `\\t`. Since then, OWASP added 2 chars in that list: Tab (0x09) and Carriage return (0x0D). This makes the previous prefix char (Tab `\\t`) part of the vulnerable characters, and OWASP suggests using the single quote `\u0027` for prefixing the value. Starting with versions 4.4.34 and 5.3.12, Symfony now follows the OWASP recommendations and uses the single quote `\u0027` to prefix formulas and add the prefix to cells starting by `\\t`, `\\r` as well as `=`, `+`, `-` and `@`.",
"id": "GSD-2021-41270",
"references": [
"https://ubuntu.com/security/CVE-2021-41270"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-41270"
],
"details": "Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony versions 4.1.0 before 4.4.35 and versions 5.0.0 before 5.3.12 are vulnerable to CSV injection, also known as formula injection. In Symfony 4.1, maintainers added the opt-in `csv_escape_formulas` option in the `CsvEncoder`, to prefix all cells starting with `=`, `+`, `-` or `@` with a tab `\\t`. Since then, OWASP added 2 chars in that list: Tab (0x09) and Carriage return (0x0D). This makes the previous prefix char (Tab `\\t`) part of the vulnerable characters, and OWASP suggests using the single quote `\u0027` for prefixing the value. Starting with versions 4.4.34 and 5.3.12, Symfony now follows the OWASP recommendations and uses the single quote `\u0027` to prefix formulas and add the prefix to cells starting by `\\t`, `\\r` as well as `=`, `+`, `-` and `@`.",
"id": "GSD-2021-41270",
"modified": "2023-12-13T01:23:26.778511Z",
"schema_version": "1.4.0"
}
},
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"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2021-41270",
"STATE": "PUBLIC",
"TITLE": "CSV Injection in Symfony"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "symfony",
"version": {
"version_data": [
{
"version_value": "\u003e= 4.1.0, \u003c 4.4.35"
},
{
"version_value": "\u003e= 5.0.0, \u003c 5.3.12"
}
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},
"data_format": "MITRE",
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"description": {
"description_data": [
{
"lang": "eng",
"value": "Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony versions 4.1.0 before 4.4.35 and versions 5.0.0 before 5.3.12 are vulnerable to CSV injection, also known as formula injection. In Symfony 4.1, maintainers added the opt-in `csv_escape_formulas` option in the `CsvEncoder`, to prefix all cells starting with `=`, `+`, `-` or `@` with a tab `\\t`. Since then, OWASP added 2 chars in that list: Tab (0x09) and Carriage return (0x0D). This makes the previous prefix char (Tab `\\t`) part of the vulnerable characters, and OWASP suggests using the single quote `\u0027` for prefixing the value. Starting with versions 4.4.34 and 5.3.12, Symfony now follows the OWASP recommendations and uses the single quote `\u0027` to prefix formulas and add the prefix to cells starting by `\\t`, `\\r` as well as `=`, `+`, `-` and `@`."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-1236: Improper Neutralization of Formula Elements in a CSV File"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/symfony/symfony/pull/44243",
"refsource": "MISC",
"url": "https://github.com/symfony/symfony/pull/44243"
},
{
"name": "https://github.com/symfony/symfony/releases/tag/v5.3.12",
"refsource": "MISC",
"url": "https://github.com/symfony/symfony/releases/tag/v5.3.12"
},
{
"name": "https://github.com/symfony/symfony/security/advisories/GHSA-2xhg-w2g5-w95x",
"refsource": "CONFIRM",
"url": "https://github.com/symfony/symfony/security/advisories/GHSA-2xhg-w2g5-w95x"
},
{
"name": "https://github.com/symfony/symfony/commit/3da6f2d45e7536ccb2a26f52fbaf340917e208a8",
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"url": "https://github.com/symfony/symfony/commit/3da6f2d45e7536ccb2a26f52fbaf340917e208a8"
},
{
"name": "FEDORA-2021-0294e8ca24",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QSREFD2TJT5LWKM6S4MD3W26NQQ5WJUP/"
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},
"source": {
"advisory": "GHSA-2xhg-w2g5-w95x",
"discovery": "UNKNOWN"
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003e=4.1.0,\u003c4.4.35||\u003e=5.0.0,\u003c5.3.12",
"affected_versions": "All versions starting from 4.1.0 before 4.4.35, all versions starting from 5.0.0 before 5.3.12",
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"cwe_ids": [
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"CWE-1236",
"CWE-937"
],
"date": "2021-12-15",
"description": "Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony is vulnerable to CSV injection, also known as formula injection. In Symfony, maintainers added the opt-in `csv_escape_formulas` option in the `CsvEncoder`, to prefix all cells starting with `=`, `+`, `-` or `@` with a tab `\\t`. Since then, OWASP added 2 chars in that list: Tab (0x09) and Carriage return (0x0D). This makes the previous prefix char (Tab `\\t`) part of the vulnerable characters, and OWASP suggests using the single quote `\u0027` for prefixing the value. Starting with, Symfony now follows the OWASP recommendations and uses the single quote `\u0027` to prefix formulas and add the prefix to cells starting by `\\t`, `\\r` as well as `=`, `+`, `-` and `@`.",
"fixed_versions": [
"4.4.35",
"5.3.12"
],
"identifier": "CVE-2021-41270",
"identifiers": [
"CVE-2021-41270",
"GHSA-2xhg-w2g5-w95x"
],
"not_impacted": "All versions before 4.1.0, all versions starting from 4.4.35 before 5.0.0, all versions starting from 5.3.12",
"package_slug": "packagist/symfony/serializer",
"pubdate": "2021-11-24",
"solution": "Upgrade to versions 4.4.35, 5.3.12 or above.",
"title": "Improper Neutralization of Formula Elements in a CSV File",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-41270",
"https://github.com/symfony/symfony/commit/3da6f2d45e7536ccb2a26f52fbaf340917e208a8",
"https://github.com/symfony/symfony/security/advisories/GHSA-2xhg-w2g5-w95x",
"https://github.com/symfony/symfony/releases/tag/v5.3.12",
"https://github.com/symfony/symfony/pull/44243",
"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QSREFD2TJT5LWKM6S4MD3W26NQQ5WJUP/",
"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3BPT4SF6SIXFMZARDWED5T32J7JEH3EP/"
],
"uuid": "4e760069-0db0-42b4-b3a1-a410f04a55bf"
},
{
"affected_range": "\u003e=4.1.0,\u003c4.4.35||\u003e=5.0.0,\u003c5.3.12",
"affected_versions": "All versions starting from 4.1.0 before 4.4.35, all versions starting from 5.0.0 before 5.3.12",
"cvss_v2": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-1236",
"CWE-937"
],
"date": "2021-12-15",
"description": "`Symfony/Serializer` handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony is vulnerable to CSV injection, also known as formula injection. In Symfony, maintainers added the opt-in `csv_escape_formulas` option in the `CsvEncoder`, to prefix all cells starting with `=`, `+`, `-` or `@` with a tab `\\t`. Since then, OWASP added 2 chars in that list, Tab (0x09) and Carriage return (0x0D). This makes the previous prefix char (Tab `\\t`) part of the vulnerable characters, and OWASP suggests using the single quote `\u0027` for prefixing the value.",
"fixed_versions": [
"4.4.35",
"5.3.12"
],
"identifier": "CVE-2021-41270",
"identifiers": [
"CVE-2021-41270",
"GHSA-2xhg-w2g5-w95x"
],
"not_impacted": "All versions before 4.1.0, all versions starting from 4.4.35 before 5.0.0, all versions starting from 5.3.12",
"package_slug": "packagist/symfony/symfony",
"pubdate": "2021-11-24",
"solution": "Upgrade to versions 4.4.35, 5.3.12 or above.",
"title": "Improper Neutralization of Formula Elements in a CSV File",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-41270",
"https://github.com/symfony/symfony/commit/3da6f2d45e7536ccb2a26f52fbaf340917e208a8",
"https://github.com/symfony/symfony/security/advisories/GHSA-2xhg-w2g5-w95x",
"https://github.com/symfony/symfony/releases/tag/v5.3.12",
"https://github.com/symfony/symfony/pull/44243"
],
"uuid": "b908a0f7-6fe3-440a-a6cd-97e6c25b4b16"
}
]
},
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 4.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6
}
},
"lastModifiedDate": "2021-12-15T17:35Z",
"publishedDate": "2021-11-24T19:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.