Multiple vulnerabilities in Microsoft SharePoint and SharePoint Foundation
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2019-0604 CVE-2019-0594 CVE-2019-0670 CVE-2019-0668 |
| CWE-ID | CWE-94 CWE-601 CWE-79 |
| Exploitation vector | Network |
| Public exploit | Vulnerability #1 is being exploited in the wild. |
| Vulnerable software Subscribe |
Microsoft SharePoint Server Server applications / Application servers Microsoft SharePoint Foundation Server applications / Application servers |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Code Injection
EUVDB-ID: #VU17622
Risk: High
CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2019-0604
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation when processing source code markup of an application package. A remote attacker with ability to upload a malicious package to the SharePoint server can execute it on the system in the context of the SharePoint application pool and the SharePoint server farm account.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires privileges to upload application packages.
Note: this vulnerability is being actively exploited in the wild since April 23.
Install updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2010 - 2019
Microsoft SharePoint Foundation: 2013
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0604
http://www.ncsc.gov.sa/wps/portal/ncsc/home/Alerts/!ut/p/z1/lVLRboJAEPwaH8kud-cBj2elYKkxYgpyLwYR67V...
http://pastebin.com/bUFPhucz
http://otx.alienvault.com/pulse/5cd3f89df12b501c477a6fba
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
2) Code Injection
EUVDB-ID: #VU17627
Risk: Medium
CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-0594
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation when processing source code markup of an application package. A remote attacker with ability to upload a malicious package to the SharePoint server can execute it on the system in the context of the SharePoint application pool and the SharePoint server farm account.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2010 - 2019
Microsoft SharePoint Server: 2013
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0594
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Open redirect
EUVDB-ID: #VU17626
Risk: Low
CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-0670
CWE-ID:
CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to redirect victims to arbitrary URL.
The vulnerability exists due to improper sanitization of user-supplied data. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.
Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2013
Microsoft SharePoint Server: 2013
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0670
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Cross-site scripting
EUVDB-ID: #VU17624
Risk: Low
CVSSv3.1: 5.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-0668
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2013 - 2016
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0668
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
