gsd-2022-0011
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
PAN-OS software provides options to exclude specific websites from URL category enforcement and those websites are blocked or allowed (depending on your rules) regardless of their associated URL category. This is done by creating a custom URL category list or by using an external dynamic list (EDL) in a URL Filtering profile. When the entries in these lists have a hostname pattern that does not end with a forward slash (/) or a hostname pattern that ends with an asterisk (*), any URL that starts with the specified pattern is considered a match. Entries with a caret (^) at the end of a hostname pattern match any top level domain. This may inadvertently allow or block more URLs than intended and allowing more URLs than intended represents a security risk. For example: example.com will match example.com.website.test example.com.* will match example.com.website.test example.com.^ will match example.com.test You should take special care when using such entries in policy rules that allow traffic. Where possible, use the exact list of hostname names ending with a forward slash (/) instead of using wildcards. PAN-OS 10.1 versions earlier than PAN-OS 10.1.3; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8; PAN-OS 9.1 versions earlier than PAN-OS 9.1.12; all PAN-OS 9.0 versions; PAN-OS 8.1 versions earlier than PAN-OS 8.1.21, and Prisma Access 2.2 and 2.1 versions do not allow customers to change this behavior without changing the URL category list or EDL.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2022-0011",
"description": "PAN-OS software provides options to exclude specific websites from URL category enforcement and those websites are blocked or allowed (depending on your rules) regardless of their associated URL category. This is done by creating a custom URL category list or by using an external dynamic list (EDL) in a URL Filtering profile. When the entries in these lists have a hostname pattern that does not end with a forward slash (/) or a hostname pattern that ends with an asterisk (*), any URL that starts with the specified pattern is considered a match. Entries with a caret (^) at the end of a hostname pattern match any top level domain. This may inadvertently allow or block more URLs than intended and allowing more URLs than intended represents a security risk. For example: example.com will match example.com.website.test example.com.* will match example.com.website.test example.com.^ will match example.com.test You should take special care when using such entries in policy rules that allow traffic. Where possible, use the exact list of hostname names ending with a forward slash (/) instead of using wildcards. PAN-OS 10.1 versions earlier than PAN-OS 10.1.3; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8; PAN-OS 9.1 versions earlier than PAN-OS 9.1.12; all PAN-OS 9.0 versions; PAN-OS 8.1 versions earlier than PAN-OS 8.1.21, and Prisma Access 2.2 and 2.1 versions do not allow customers to change this behavior without changing the URL category list or EDL.",
"id": "GSD-2022-0011"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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],
"details": "PAN-OS software provides options to exclude specific websites from URL category enforcement and those websites are blocked or allowed (depending on your rules) regardless of their associated URL category. This is done by creating a custom URL category list or by using an external dynamic list (EDL) in a URL Filtering profile. When the entries in these lists have a hostname pattern that does not end with a forward slash (/) or a hostname pattern that ends with an asterisk (*), any URL that starts with the specified pattern is considered a match. Entries with a caret (^) at the end of a hostname pattern match any top level domain. This may inadvertently allow or block more URLs than intended and allowing more URLs than intended represents a security risk. For example: example.com will match example.com.website.test example.com.* will match example.com.website.test example.com.^ will match example.com.test You should take special care when using such entries in policy rules that allow traffic. Where possible, use the exact list of hostname names ending with a forward slash (/) instead of using wildcards. PAN-OS 10.1 versions earlier than PAN-OS 10.1.3; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8; PAN-OS 9.1 versions earlier than PAN-OS 9.1.12; all PAN-OS 9.0 versions; PAN-OS 8.1 versions earlier than PAN-OS 8.1.21, and Prisma Access 2.2 and 2.1 versions do not allow customers to change this behavior without changing the URL category list or EDL.",
"id": "GSD-2022-0011",
"modified": "2023-12-13T01:19:12.080665Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"DATE_PUBLIC": "2022-02-09T17:00:00.000Z",
"ID": "CVE-2022-0011",
"STATE": "PUBLIC",
"TITLE": "PAN-OS: URL Category Exceptions Match More URLs Than Intended in URL Filtering"
},
"affects": {
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"value": "This issue is applicable only when you configure exceptions to URL filtering either by creating a custom URL category list or by using an external dynamic list (EDL) in a URL Filtering profile as per https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-admin/url-filtering/block-and-allow-lists.html."
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"credit": [
{
"lang": "eng",
"value": "Palo Alto Networks thanks Chris Johnston of PricewaterhouseCoopers for discovering and reporting this issue."
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
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"value": "CWE-436 Interpretation Conflict"
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"name": "https://security.paloaltonetworks.com/CVE-2022-0011",
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"url": "https://security.paloaltonetworks.com/CVE-2022-0011"
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"solution": [
{
"lang": "eng",
"value": "PAN-OS 8.1.21, PAN-OS 9.1.12, PAN-OS 10.0.8, PAN-OS 10.1.3, Prisma Access 3.0 Preferred, and Prisma Access 3.0 Innovation all include a customer configurable option to automatically append a forward slash at the end of the hostname pattern for entries without an ending token in a custom URL category list or in an external dynamic list (EDL).\n\nPrisma Access customers should refer to \u201cSTEP 7\u201d in the following Prisma Access 3.0 documentation to enable this feature:\n\nhttps://docs.paloaltonetworks.com/prisma/prisma-access/prisma-access-panorama-admin/prepare-the-prisma-access-infrastructure/prisma-access-service-infrastructure/enable-the-service-infrastructure.html\n\nFor other PAN-OS appliances, this option is enabled by running these CLI commands:\n debug device-server append-end-token on\n commit force\n\nNote: This option is disabled by default on PAN-OS 8.1, PAN-OS 9.1, PAN-OS 10.0, and PAN-OS 10.1. This option will be enabled by default starting with the next major version of PAN-OS. This option is not available on PAN-OS 9.0. Customers with PAN-OS 9.0 are advised to apply workarounds or upgrade to PAN-OS 9.1 or a later version.\n\nAdditionally, customers must evaluate their custom URL category list or their external dynamic list (EDL) and any firewall policy rules that depend on them to determine whether this option provides the desired policy rule enforcement.\n\nExample 1: If the firewall policy rule is intended to allow only \u0027www.example.com\u0027 and not to allow access to any other site, such as www.example.com.webiste.test, then use the \"debug device-server append-end-token on\" CLI command.\n\nExample 2: If the firewall policy rule is set to block access to \u0027www.example.co\u0027 and block access to sites such as www.example.com, www.example.co.az, then keep the default setting (\"debug device-server append-end-token off\" CLI command). You should always use the most appropriate token if you need to match multiple hostnames in a policy rule.\n"
}
],
"source": {
"defect": [
"PAN-174443"
],
"discovery": "EXTERNAL"
},
"timeline": [
{
"lang": "eng",
"time": "2022-02-09T17:00:00.000Z",
"value": "initial publication"
}
],
"work_around": [
{
"lang": "eng",
"value": "Add a forward slash (/) at the end of the hostname pattern for all entries in the custom URL category list or the external dynamic list (EDL).\n\nFor example:\n example.com/ will not match example.com.website.test\n"
}
],
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},
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"authentication": "SINGLE",
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},
"lastModifiedDate": "2022-02-17T13:41Z",
"publishedDate": "2022-02-10T18:15Z"
}
}
}
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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.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- 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.