Microsoft Exchange Client Access Server Information Disclosure

Medium Nessus Plugin ID 77026

Synopsis

The remote mail server is affected by an information disclosure vulnerability.

Description

The Microsoft Exchange Client Access Server (CAS) is affected by an information disclosure vulnerability. A remote, unauthenticated attacker can exploit this vulnerability to learn the server's internal IP address.
An attacker can send a crafted GET request to the Web Server with an empty host header that would expose internal IP Addresses of the underlying system in the header response.

Solution

Only attack two (Reverse Proxy / Gateway) is fixed in current versions. Apply the latest supplied vendor patches.

See Also

http://foofus.net/?p=758

http://www.nessus.org/u?4eedfe2d

http://www.nessus.org/u?caaa19d8

Plugin Details

Severity: Medium

ID: 77026

File Name: exchange_ip_disclosure.nasl

Version: 1.6

Type: remote

Agent: windows

Family: Windows

Published: 2014/08/06

Modified: 2018/11/06

Dependencies: 10107

Risk Information

Risk Factor: Medium

CVSS Score Source: manual

CVSS Score Rationale: Nvd score unavailable. information disclosure vulnerability.

CVSS v2.0

Base Score: 5

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Temporal Vector: CVSS2#E:ND/RL:U/RC:ND

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: cpe:/a:microsoft:exchange_server

Exploit Available: true

Exploit Ease: Exploits are available

Exploited by Nessus: true

Vulnerability Publication Date: 2014/08/01

Reference Information

BID: 69018