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CVE-2020-35963

Good to know:

Date: January 3, 2021

flb_gzip_compress in flb_gzip.c in Fluent Bit before 1.6.4 has an out-of-bounds write because it does not use the correct calculation of the maximum gzip data-size expansion.

Language: C

Severity Score

7.8

Related Resources (5)

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-35963

Url: https://github.com/fluent/fluent-bit/commit/cadff53c093210404aed01c4cf586adb8caa07af

Url: https://fluentbit.io/announcements/v1.6.4/

Url: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27261

Url: https://www.mend.io/vulnerability-database/CVE-2020-35963

Severity Score

7.8

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Top Fix

Upgrade Version

Upgrade to version v1.6.3

CVSS v3.1

Base Score:	7.8
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	6.8
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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