PT-2020-13168 · Em Client · Eclient

Published 2020-08-20 · Updated 2021-07-21 · CVE-2020-12618

Positive Technologies (AI Summary)

CVSS v2.0

5.8

Medium

Base vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Name of the Vulnerable Software and Affected Versions eM Client versions prior to 7.2.33412.0

Description The issue allows a man-in-the-middle attacker to obtain an email-validated S/MIME certificate from a trusted CA and replace the public key of the entity to be impersonated. This enables the attacker to decipher further communication. The entire attack could be accomplished by sending a single email.

Recommendations For versions prior to 7.2.33412.0, update to version 7.2.33412.0 or later to resolve the issue. As a temporary workaround, consider disabling the automatic import of S/MIME certificates until a patch is available. Restrict access to sensitive email communications to minimize the risk of exploitation.

Fix

Related Identifiers

CVE-2020-12618

Affected Products

Eclient

References · 4

• https://osv.dev/vulnerability/CVE-2020-12618 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-12618 · Security Note
• https://emclient.com/release-history · Vendor Advisory
• https://nds.ruhr-uni-bochum.de/media/nds/veroeffentlichungen/2020/08/15/mailto-paper.pdf · Note