OX Software OX App Suite SMTP Service resource consumption

HistoryDiffrelatejsonxmlCTI

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.
3.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in OX Software OX App Suite. It has been classified as problematic. This impacts an unknown function of the component SMTP Service Handler. Performing a manipulation results in resource consumption. This vulnerability is cataloged as CVE-2023-26432. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in OX Software OX App Suite (unknown version). It has been classified as problematic. This affects an unknown code block of the component SMTP Service Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

When adding an external mail account, processing of SMTP "capabilities" responses are not limited to plausible sizes. Attacker with access to a rogue SMTP service could trigger requests that lead to excessive resource usage and eventually service unavailability. We now limit accepted SMTP server response to reasonable length/size. No publicly available exploits are known.

The weakness was shared 06/20/2023. It is possible to read the advisory at documentation.open-xchange.com. This vulnerability is uniquely identified as CVE-2023-26432 since 02/22/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Groupware Software

Vendor

OX Software

Name

OX App Suite

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.1
VulDB Temp Score: 3.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (Open-Xchange): 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/22/2023 🔍
06/20/2023 +117 days 🔍
06/20/2023 +0 days 🔍
07/15/2023 +25 days 🔍

Sourcesinfo

Advisory: 173083
Status: Confirmed

CVE: CVE-2023-26432 (🔍)
GCVE (CVE): GCVE-0-2023-26432
GCVE (VulDB): GCVE-100-231999

Entryinfo

Created: 06/20/2023 11:22
Updated: 07/15/2023 21:05
Changes: 06/20/2023 11:22 (47), 07/15/2023 21:05 (1)
Complete: 🔍
Cache ID: 216::103