CVE-2021-39226
Scores
EPSS
Percentile: 94.3%
CVSS
CVSS Score: 7.3/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
Low (L)
Measures the impact to the confidentiality of information
Integrity Impact
Low (L)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Low (L)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Medium
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
Partial
Measures the impact to the confidentiality of information
Integrity Impact
Partial
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Partial
Measures the impact to the availability of the impacted component
Description
Grafana is an open source data visualization platform. In affected versions unauthenticated and authenticated users are able to view the snapshot with the lowest database key by accessing the literal paths: /dashboard/snapshot/:key, or /api/snapshots/:key. If the snapshot “public_mode” configuration setting is set to true (vs default of false), unauthenticated users are able to delete the snapshot with the lowest database key by accessing the literal path: /api/snapshots-delete/:deleteKey. Regardless of the snapshot “public_mode” setting, authenticated users are able to delete the snapshot with the lowest database key by accessing the literal paths: /api/snapshots/:key, or /api/snapshots-delete/:deleteKey. The combination of deletion and viewing enables a complete walk through all snapshot data while resulting in complete snapshot data loss. This issue has been resolved in versions 8.1.6 and 7.5.11. If for some reason you cannot upgrade you can use a reverse proxy or similar to block access to the literal paths: /api/snapshots/:key, /api/snapshots-delete/:deleteKey, /dashboard/snapshot/:key, and /api/snapshots/:key. They have no normal function and can be disabled without side effects.
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Sources
CWEs
Related Vulnerabilities
Exploits
Exploit ID: CVE-2021-39226
Source: cisa
URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Vulnerable Software (8)
Type: Configuration
Product: grafana
Operating System: rhel
{
"fixed": "7.3.6-3.el8_4"
}Source: redhat
Type: Configuration
Product: grafana
Operating System: rhel
{
"fixed": "6.2.2-7.el8_1"
}Source: redhat
Type: Configuration
Product: grafana
Operating System: rhel
{
"fixed": "6.3.6-3.el8_2"
}Source: redhat
Type: Configuration
Product: grafana
Operating System: ubuntu trusty 14.04
{
"unfixed": true
}Source: ubuntu
Type: Configuration
Product: grafana
Operating System: ubuntu xenial 16.04
{
"unfixed": true
}Source: ubuntu
Type: Configuration
Product: grafana
Operating System: debian
{
"unfixed": true
}Source: debian
Type: Configuration
Vendor: fedoraproject
Product: fedora
Operating System: * * *
{
"cpe_match": [
{
"cpe23uri": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"vulnerable": true
},
{
"cpe23uri": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",...{
"cpe_match": [
{
"cpe23uri": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"vulnerable": true
},
{
"cpe23uri": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",
"vulnerable": true
}
],
"operator": "OR"
}Source: nvd
Type: Configuration
Vendor: grafana
Product: grafana
Operating System: * * *
{
"cpe_match": [
{
"cpe23uri": "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.5.11",
"vulnerable": true
},
{
"cpe23uri": "cpe:2.3:a:grafan...{
"cpe_match": [
{
"cpe23uri": "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.5.11",
"vulnerable": true
},
{
"cpe23uri": "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*",
"versionEndExcluding": "8.1.6",
"versionStartIncluding": "8.0.0",
"vulnerable": true
}
],
"operator": "OR"
}Source: nvd