Detections
Analytics
Microsoft Exchange Autodiscover V2 User Enumeration
medium Web App Scanning Plugin ID 114590
Language:
Synopsis
Microsoft Exchange Autodiscover V2 User EnumerationDescription
On-Premise installation of Microsoft Exchange is prone to a user enumeration through the ActiveSync protocol using the AutodiscoverV2 endpoint.Solution
If the Autodiscover feature is not required for external access, restrict access to internal networks only via network filtering or IIS rules, or disable ActiveSync if not required.See Also
https://www.msxfaq.de/exchange/autodiscover/autodiscover_v2.htm
Plugin Details
Severity: Medium
ID: 114590
Type: remote
Family: Web Applications
Published: 2/3/2025
Updated: 2/3/2025
Scan Template: basic, full, pci, scan
Risk Information
VPR
Risk Factor: Low
Score: 2.2
CVSS v2
Risk Factor: Medium
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: Tenable
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS Score Source: Tenable
CVSS v4
Risk Factor: Medium
Base Score: 6.9
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score Source: Tenable
Reference Information
CWE: 200
OWASP: 2010-A6, 2013-A5, 2017-A6, 2021-A1
WASC: Information Leakage
CAPEC: 116, 13, 169, 22, 224, 285, 287, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 312, 313, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 472, 497, 508, 573, 574, 575, 576, 577, 59, 60, 616, 643, 646, 651, 79
DISA STIG: APSC-DV-000460
HIPAA: 164.306(a)(1), 164.306(a)(2)
ISO: 27001-A.14.2.5
NIST: sp800_53-SI-15
OWASP API: 2019-API7, 2023-API8
OWASP ASVS: 4.0.2-8.3.4
PCI-DSS: 3.2-6.5.8