CVE-2023-51747
High
Description
Apache James prior to versions 3.8.1 and 3.7.5 is vulnerable to SMTP smuggling. A lenient behaviour in line delimiter handling might create a difference of interpretation between the sender and the receiver which can be exploited by an attacker to forge an SMTP envelop, allowing for instance to bypass SPF checks. The patch implies enforcement of CRLF as a line delimiter as part of the DATA transaction. We recommend James users to upgrade to non vulnerable versions.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Apache James
PublishedFeb 27, 2024
First seenFeb 27, 2024
Weakness typeCWE-20Improper input validation
How to fix
Update
- org.apache.james:james-server3.7.5, 3.8.1 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache james | 3.7.5, 3.8.1 | — |
| org.apache.james:james-serverMaven | v < 3.7.5, 3.8.0 ≤ v < 3.8.1 | 3.7.5, 3.8.1 |
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