PT-2020-13366 · Eventmachine · Em-Imap

Agustin Gianni + 1 · Published 2020-05-19 · Updated 2021-05-24 · CVE-2020-13163

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-imap versions 0.5 and earlier

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-imap version 0.5 and earlier, consider updating to a version that securely uses the eventmachine library, ensuring the verification of the hostname in TLS server certificates. 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-2020-13163

GHSA-4F68-49QQ-H392

Affected Products

Em-Imap

References · 7

• 🔥 https://github.com/ConradIrwin/em-imap/issues/25 · Exploit
• 🔥 https://securitylab.github.com/advisories/GHSL-2020-095-conradirwin-em-imap · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-13163 · Security Note
• https://osv.dev/vulnerability/GHSA-4f68-49qq-h392 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-13163 · Vendor Advisory
• https://github.com/ConradIrwin/em-imap · Note
• https://t.me/cvenotify/10216 · Telegram Post