VDB-133223 · CVE-2019-0857 · BID 107749

Microsoft Azure DevOps Server 2019 Content Security Policy input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Microsoft Azure DevOps Server 2019. This affects an unknown part. The manipulation leads to input validation (Content Security Policy). This vulnerability is listed as CVE-2019-0857. The attack may be initiated remotely. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Azure DevOps Server 2019 (Cloud Software) and classified as critical. This issue affects some unknown processing. The manipulation with an unknown input leads to a input validation vulnerability (Content Security Policy). Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A spoofing vulnerability that could allow a security feature bypass exists in when Azure DevOps Server does not properly sanitize user provided input, aka 'Azure DevOps Server Spoofing Vulnerability'.

The bug was discovered 04/09/2019. The weakness was presented 04/09/2019 by Mikhail as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release was coordinated in cooperation with Microsoft. The identification of this vulnerability is CVE-2019-0857 since 11/26/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The advisory points out:

A spoofing vulnerability that could allow a security feature bypass exists in when Azure DevOps Server does not properly sanitize user provided input. An attacker who exploited the vulnerability could trick a user into loading a page containing malicious content.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 91520 (Microsoft Team Foundation Server Update for April 2019).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 107749†). See VDB-133226, VDB-133227, VDB-133228 and VDB-133229 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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

Name: Content Security Policy
Class: Input validation / Content Security Policy
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

11/26/2018 🔍
04/09/2019 +134 days 🔍
04/09/2019 +0 days 🔍
04/09/2019 +0 days 🔍
04/09/2019 +0 days 🔍
04/10/2019 +1 days 🔍
05/28/2020 +414 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Mikhail
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2019-0857 (🔍)
GCVE (CVE): GCVE-0-2019-0857
GCVE (VulDB): GCVE-100-133223
SecurityFocus: 107749 - Microsoft Azure DevOps Server and Team Foundation Server Cross Site Scripting Vulnerability

See also: 🔍

Entryinfo

Created: 04/10/2019 08:45
Updated: 05/28/2020 10:10
Changes: 04/10/2019 08:45 (65), 05/28/2020 10:10 (5)
Complete: 🔍
Cache ID: 216::103

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

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