Microsoft Exchange Server up to 2010 SP3 Outlook Web Access /owa/auth/logon.aspx Username server-side request forgery

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$25k-$100k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Microsoft Exchange Server up to 2010 SP3. Impacted is an unknown function of the file /owa/auth/logon.aspx of the component Outlook Web Access. Performing a manipulation of the argument Username as part of Parameter results in server-side request forgery. This vulnerability is identified as CVE-2018-16793. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical has been found in Microsoft Exchange Server up to 2010 SP3 (Groupware Software). This affects some unknown functionality of the file /owa/auth/logon.aspx of the component Outlook Web Access. The manipulation of the argument username as part of a Parameter leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Rollup 18 for Microsoft Exchange Server 2010 SP3 and previous versions has an SSRF vulnerability via the username parameter in /owa/auth/logon.aspx in the OWA (Outlook Web Access) login page.

The bug was discovered 12/13/2018. The weakness was released 09/21/2018 as not defined mailinglist post (Bugtraq). It is possible to read the advisory at seclists.org. This vulnerability is uniquely identified as CVE-2018-16793 since 09/10/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $25k-$100k at the moment (estimation calculated on 05/17/2023).

By approaching the search of inurl:owa/auth/logon.aspx it is possible to find vulnerable targets with Google Hacking.

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

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105386†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.6
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/10/2018 🔍
09/17/2018 +7 days 🔍
09/21/2018 +3 days 🔍
09/21/2018 +0 days 🔍
09/22/2018 +1 days 🔍
12/13/2018 +82 days 🔍
05/17/2023 +1616 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: 149411
Status: Not defined

CVE: CVE-2018-16793 (🔍)
GCVE (CVE): GCVE-0-2018-16793
GCVE (VulDB): GCVE-100-124371
SecurityFocus: 105386 - Rollup 18 for Microsoft Exchange Server Server Side Request Forgery Security Bypass Vulnerability

Entryinfo

Created: 09/22/2018 07:48
Updated: 05/17/2023 14:48
Changes: 09/22/2018 07:48 (62), 03/26/2020 14:51 (3), 05/17/2023 14:48 (3)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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