VDB-254893 · CVE-2023-51747 · GCVE-0-2023-51747

Apache James Server up to 3.7.4/3.8.0 SMTP input validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Apache James Server up to 3.7.4/3.8.0. Affected by this issue is some unknown functionality of the component SMTP Handler. This manipulation causes input validation. This vulnerability appears as CVE-2023-51747. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apache James Server up to 3.7.4/3.8.0 and classified as problematic. Affected by this vulnerability is some unknown functionality of the component SMTP Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. The impact remains unknown. The summary by CVE is:

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.

The weakness was presented 02/27/2024. The advisory is shared at sec-consult.com. This vulnerability is known as CVE-2023-51747 since 12/22/2023. Neither technical details nor an exploit are publicly available.

Upgrading to version 3.7.5 or 3.8.1 eliminates this vulnerability.

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Productinfo

Vendor

Apache

Name

James Server

Version

License

open-source

Website

Vendor: https://www.apache.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.1
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: James Server 3.7.5/3.8.1

Timelineinfo

12/22/2023 🔍
02/27/2024 +67 days 🔍
02/27/2024 +0 days 🔍
11/13/2024 +260 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: sec-consult.com
Status: Confirmed

CVE: CVE-2023-51747 (🔍)
GCVE (CVE): GCVE-0-2023-51747
GCVE (VulDB): GCVE-100-254893

Entryinfo

Created: 02/27/2024 15:02
Updated: 11/13/2024 20:50
Changes: 02/27/2024 15:02 (39), 11/13/2024 20:50 (27)
Complete: 🔍
Cache ID: 216::103