CVE-2020-13482

rubygem-em-http-request: missing SSL hostname validation allows MITM

Severity Score

7.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

EM-HTTP-Request 1.1.5 uses the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified.

EM-HTTP-Request versión 1.1.5, usa la biblioteca eventmachine en una manera no segura que permite a un atacante llevar a cabo un ataque de tipo man-in-the-middle contra los usuarios de la biblioteca. El nombre de host en un certificado de servidor TLS no es verificado.

A flaw was found in rubygem-em-http-request. The eventmachine library does not verify the hostname in a TLS server certificate which can allow an attacker to perform a man-in-the-middle attack. The highest threat from this vulnerability is to data confidentiality and integrity.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-05-25 CVE Reserved
2020-05-25 CVE Published
2024-02-10 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-295: Improper Certificate Validation
CWE-297: Improper Validation of Certificate with Host Mismatch

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC
https://github.com/igrigorik/em-http-request/issues/339	2024-08-04
https://securitylab.github.com/advisories/GHSL-2020-094-igrigorik-em-http-request	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MKYP5TR5NTVVDX5R4HCNNH2OQR7M4X3J	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z32PUJA6RGBZ3TKSOTGUXZ45662S3MVF	2023-11-07
https://access.redhat.com/security/cve/CVE-2020-13482	2021-03-18
https://bugzilla.redhat.com/show_bug.cgi?id=1911457	2021-03-18

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Em-http-request Project Search vendor "Em-http-request Project"		Em-http-request Search vendor "Em-http-request Project" for product "Em-http-request"				1.1.5 Search vendor "Em-http-request Project" for product "Em-http-request" and version "1.1.5"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected