Vulnerability · Published Feb 27, 2024 · Assigned by apache
CVE-2023-51747SMTP smuggling in Apache James
High 7.1
In plain English
A high-severity improper input validation in Apache James server from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.apache.james:james-server | 3.7.5 | GHSA-p5q9-86w4-2xr5 |
| Maven | org.apache.james:james-server | 3.8.1 | GHSA-p5q9-86w4-2xr5 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache James server | 0 – through 3.7.43.8 – through 3.8.0 |
Weakness: CWE-20, CWE-444, CWE-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N