Vulnerability Details : CVE-2023-26432
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.
Products affected by CVE-2023-26432
- Open-xchange » Open-xchange Appsuite BackendVersions from including (>=) 8.0.0 and before (<) 8.11.0cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:*:*:*:*:*:*:*:*
- cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:*:*:*:*:*:*:*:*
- cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:*:*:*:*:*:*:*
- cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:revision_39:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-26432
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 28 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-26432
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
2.8
|
1.4
|
NIST | |
|
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
2.8
|
1.4
|
Open-Xchange |
CWE ids for CVE-2023-26432
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by: security@open-xchange.com (Secondary)
References for CVE-2023-26432
-
http://seclists.org/fulldisclosure/2023/Jun/8
Full Disclosure: OXAS-ADV-2023-0002: OX App Suite Security AdvisoryMailing List;Third Party Advisory
-
https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0002.json
-
http://packetstormsecurity.com/files/173083/OX-App-Suite-SSRF-Resource-Consumption-Command-Injection.html
OX App Suite SSRF / Resource Consumption / Command Injection ≈ Packet StormThird Party Advisory;VDB Entry
-
https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6219_7.10.6_2023-03-20.pdf
Release Notes
-
https://documentation.open-xchange.com/security/advisories/csaf/oxas-adv-2023-0002.json
Third Party Advisory
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