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mscveMicrosoftMS:CVE-2019-0857
HistoryApr 09, 2019 - 7:00 a.m.

Azure DevOps Server Spoofing Vulnerability

2019-04-0907:00:00
Microsoft
msrc.microsoft.com
8

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

0.002 Low

EPSS

Percentile

56.1%

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.

An authenticated attacker could exploit the vulnerability by sending a specially crafted payload to the Azure DevOps Server, which would get executed in the context of the user every time a user visits the compromised page. To exploit the bypass, an attacker can leverage any external source in the script-src to embed malicious script by bypassing Content Security Policy (CSP).

The security update addresses the vulnerability by ensuring that Azure DevOps Server sanitizes user input and enforces a strict CSP policy.

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

0.002 Low

EPSS

Percentile

56.1%