PT-2020-13565 · Eventmachine · Eventmachine+1

Agustin Gianni + 1 · Published 2020-05-25 · Updated 2021-05-24 · CVE-2020-13482

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions EM-HTTP-Request version 1.1.5

Description The issue allows an attacker to perform a man-in-the-middle attack against users of the library. This is due to the insecure use of the eventmachine library, which fails to verify the hostname in a TLS server certificate.

Recommendations For EM-HTTP-Request version 1.1.5, consider updating to a newer version that properly verifies the hostname in TLS server certificates to prevent man-in-the-middle attacks. As a temporary workaround, restrict the use of the eventmachine library until a secure version is available.

Exploit

Fix

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

CVE-2020-13482

GHSA-Q27F-V3R6-9V77

MGASA-2021-0172

RHSA-2021:0937

Affected Products

Em-Http-Request

Eventmachine

References · 20

• 🔥 https://github.com/igrigorik/em-http-request/issues/339 · Exploit
• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/em-http-request/CVE-2020-13482.yml · Exploit
• 🔥 https://securitylab.github.com/advisories/GHSL-2020-094-igrigorik-em-http-request · Exploit
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/MKYP5TR5NTVVDX5R4HCNNH2OQR7M4X3J · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MKYP5TR5NTVVDX5R4HCNNH2OQR7M4X3J · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-13482 · Security Note
• https://osv.dev/vulnerability/CVE-2020-13482 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/Z32PUJA6RGBZ3TKSOTGUXZ45662S3MVF · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2021-0172 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0172.html · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z32PUJA6RGBZ3TKSOTGUXZ45662S3MVF · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-q27f-v3r6-9v77 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/Z32PUJA6RGBZ3TKSOTGUXZ45662S3MVF · Vendor Advisory
• https://github.com/igrigorik/em-http-request · Note
• https://github.com/igrigorik/em-http-request/commit/e5fa144f8d21050dd1fc15a4dc8aa34ac6f30602 · Note