CVE-2020-10933

CVE Details

Release Date:	2020-05-04
Impact:	None	What is this?

Description

An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#read_nonblock(requested_size, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap. This may expose possibly sensitive data from the interpreter.

See more information about CVE-2020-10933 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.3
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	Low
Integrity Impact:	None
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (ruby)	ELSA-2021-2587	2021-07-02
Oracle Linux version 8 (ruby)	ELSA-2021-2588	2021-07-07
Oracle Linux version 8 (rubygem-abrt)	ELSA-2021-2587	2021-07-02
Oracle Linux version 8 (rubygem-abrt)	ELSA-2021-2588	2021-07-07
Oracle Linux version 8 (rubygem-bson)	ELSA-2021-2587	2021-07-02
Oracle Linux version 8 (rubygem-bson)	ELSA-2021-2588	2021-07-07
Oracle Linux version 8 (rubygem-bundler)	ELSA-2021-2587	2021-07-02
Oracle Linux version 8 (rubygem-mongo)	ELSA-2021-2587	2021-07-02
Oracle Linux version 8 (rubygem-mongo)	ELSA-2021-2588	2021-07-07
Oracle Linux version 8 (rubygem-mysql2)	ELSA-2021-2587	2021-07-02
Oracle Linux version 8 (rubygem-mysql2)	ELSA-2021-2588	2021-07-07
Oracle Linux version 8 (rubygem-pg)	ELSA-2021-2587	2021-07-02
Oracle Linux version 8 (rubygem-pg)	ELSA-2021-2588	2021-07-07