CVE-2023-51747
Apache James prior to versions 3.8.1 and 3.7.5 is vulnerable to SMTP smuggling.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.04%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
- EPSS
- 1.04% probability · 62th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-290, CWE-444
- Affected
- apache/james
- Source
- security@apache.org
References
- http://www.openwall.com/lists/oss-security/2024/02/27/4Mailing List, Third Party Advisory
- https://lists.apache.org/thread/rxkwbkh9vgbl9rzx1fkllyk3krhgydkoMailing List, Vendor Advisory
- https://postfix.org/smtp-smuggling.htmlProduct
- https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/Product
- http://www.openwall.com/lists/oss-security/2024/02/27/4Mailing List, Third Party Advisory
- https://lists.apache.org/thread/rxkwbkh9vgbl9rzx1fkllyk3krhgydkoMailing List, Vendor Advisory
- https://postfix.org/smtp-smuggling.htmlProduct
- https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/Product
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.