Two XSS in Microsoft SharePoint

Published: 2017-09-12 20:58:57
Severity Low
Patch available YES
Number of vulnerabilities 2
CVSSv2 3.2 (AV:N/AC:M/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C)
3.2 (AV:N/AC:M/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C)
CVSSv3 5.2 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
5.2 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE ID CVE-2017-8629
CVE-2017-8745
CWE ID CWE-79
Exploitation vector Network
Public exploit Not available
Vulnerable software Microsoft SharePoint Server
Microsoft SharePoint Foundation
Vulnerable software versions Microsoft SharePoint Server 2013
Microsoft SharePoint Foundation 2013
Vendor URL Microsoft
Advisory type Public

Security Advisory

1) Cross-site scripting

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8629

2) Cross-site scripting

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8745

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