CVE Vulnerability

CVE-2021-39194

kaml is an open source implementation of the YAML format with support for kotlinx.serialization. In affected versions attackers that could provide arbitrary YAML input to an application that uses kaml could cause the application to endlessly loop while parsing the input. This could result in resource starvation and denial of service. This only affects applications that use polymorphic serialization with the default tagged polymorphism style. Applications using the property polymorphism style are not affected. YAML input for a polymorphic type that provided a tag but no value for the object would trigger the issue. Version 0.35.3 or later contain the fix for this issue.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/charleskorn/kaml/issues/179 Exploit Patch
https://github.com/charleskorn/kaml/commit/e18785d043fc6324c81e968aae9764b4b060bc6a Patch Third Party Advisory
https://github.com/charleskorn/kaml/security/advisories/GHSA-fmm9-3gv8-58f4 Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:kaml_project:kaml:*:*:*:*:*:*:*:*
Information

Published : 2021-09-07 08:15

Updated : 2021-09-14 05:06

NVD link : CVE-2021-39194

Mitre link : CVE-2021-39194

Products Affected
No products.
CWE
CWE-835