CVE-2021-39181
Scores
EPSS
Percentile: 0.0%
CVSS
CVSS Score: 8.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
Low (L)
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
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:L/Au:S/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
Low (L)
Describes the conditions beyond the attacker's control
Authentication
Single
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
OpenOlat is a web-based learning management system (LMS). Prior to version 15.3.18, 15.5.3, and 16.0.0, using a prepared import XML file (e.g. a course) any class on the Java classpath can be instantiated, including spring AOP bean factories. This can be used to execute code arbitrary code by the attacker. The attack requires an OpenOlat user account with the authoring role. It can not be exploited by unregistered users. The problem is fixed in versions 15.3.18, 15.5.3, and 16.0.0. There are no known workarounds aside from upgrading.
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Sources
CWEs
Vulnerable Software (1)
Type: Configuration
Vendor: frentix
Product: openolat
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:*", "versionEndExcluding": "15.3.18", "vulnerable": true }, { "cpe23uri": "cpe:2.3:a:fren...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:*", "versionEndExcluding": "15.3.18", "vulnerable": true }, { "cpe23uri": "cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:*", "versionEndExcluding": "15.5.3", "versionStartIncluding": "15.5.0", "vulnerable": true } ], "operator": "OR"}
Source: nvd