CVE-2021-38189

Critical

Description

An issue was discovered in the lettre crate before 0.9.6 for Rust. In an e-mail message body, an attacker can place a . character after two <CR><LF> sequences and then inject arbitrary SMTP commands.

SeverityCritical
CVSS9.8
Exploit probability—
ProductLettre
PublishedAug 8, 2021
First seenAug 8, 2021

How to fix

Update
  • lettre lettre0.9.6 or later

Affected products

ProductAffected versionsFixed in
lettre lettrev < 0.9.6, 0.10.00.9.6

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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CVE-2021-38189 · Lettre · Dark Radar