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CVE-2021-38189

Severity CVSS v4.0:
Pending analysis
Type:
CWE-77 Command Injection
Publication date:
08/08/2021
Last modified:
16/08/2021

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 sequences and then inject arbitrary SMTP commands.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:lettre:lettre:*:*:*:*:*:rust:*:* 0.9.6 (excluding)
cpe:2.3:a:lettre:lettre:0.10.0:alpha1:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:alpha2:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:alpha3:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:alpha4:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:alpha5:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:beta1:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:beta2:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:beta3:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:beta4:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:rc1:*:*:*:rust:*:*
cpe:2.3:a:lettre:lettre:0.10.0:rc2:*:*:*:rust:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools