CVE-2021-46878
Scores
EPSS
Percentile: 0.0%
CVSS
CVSS Score: 7.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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
Local (L)
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
Required (R)
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
Description
An issue was discovered in Treasure Data Fluent Bit 1.7.1, erroneous parsing in flb_pack_msgpack_to_json_format leads to type confusion bug that interprets whatever is on the stack as msgpack maps and arrays, leading to use-after-free. This can be used by an attacker to craft a specially craft file and trick the victim opening it using the affect software, triggering use-after-free and execute arbitrary code on the target system.
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Sources
CWEs
Vulnerable Software (1)
Type: Configuration
Vendor: treasuredata
Product: fluent_bit
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:a:treasuredata:fluent_bit:1.7.1:*:*:*:*:*:*:*", "vulnerable": true } ], "operator": "OR"}
Source: nvd