CVE-2019-1257
published 2019-09-11CVE-2019-1257: A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka…
PriorityP358high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
11.66%
95.6th percentile
A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1295, CVE-2019-1296.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_sharepoint_enterprise_server | — | — |
| microsoft | microsoft_sharepoint_foundation | — | — |
| microsoft | microsoft_sharepoint_server | — | — |
| microsoft | sharepoint_enterprise_server | — | — |
| microsoft | sharepoint_foundation | — | — |
| microsoft | sharepoint_foundation | — | — |
| microsoft | sharepoint_server | — | — |
| msrc | microsoft_sharepoint_enterprise_server_2016 | — | — |
| msrc | microsoft_sharepoint_foundation_2010_service_pack_2 | — | — |
| msrc | microsoft_sharepoint_foundation_2013_service_pack_1 | — | — |
| msrc | microsoft_sharepoint_server_2019 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Detect BDC model uploads containing parameters of type Microsoft.BusinessData.Runtime.DynamicType, which triggers arbitrary XmlSerializer deserialization and is the core exploit primitive for CVE-2019-1257. ↗
- →Monitor SharePoint Central Administration upload activity for Business Data Connectivity (BDC) model files, particularly via the path: Application Management > Manage service applications > Business Data Connectivity Service, or via PowerShell BDC model imports. ↗
- →Alert on child processes (e.g., cmd.exe, calc.exe) spawned from w3wp.exe in the context of the SharePoint application pool, which indicates successful exploitation of this deserialization vulnerability. ↗
- →Set breakpoint or monitor calls to System.Web.UI.ObjectStateFormatter.Deserialize within w3wp.exe as an indicator of deserialization exploitation in SharePoint. ↗
- →Exploitation requires a user to upload a specially crafted SharePoint application package; monitor SharePoint for unexpected or unauthorized application package uploads as a precursor indicator. ↗
- ·Exploitation requires an administrator account to first upload a malicious BDC model to the SharePoint Business Data Connectivity Service; the attacker then invokes the method with a deserialization payload. This is a two-stage attack requiring elevated initial access. ↗
- ·The Preview Pane is not an attack vector for this vulnerability. ↗
- ·Vulnerability was confirmed on Microsoft SharePoint Server 2016 with KB4464594 installed on 64-bit Windows Server 2016 update 14393.3025; all supported SharePoint versions are affected. ↗
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.06.5MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P
vendor_msrc8.8CRITICAL
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GHSA
GHSA-ggg2-5wvj-2mxq: A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka
ghsa_unreviewed·2022-05-24·CVSS 8.8
CVE-2019-1257 [HIGH] GHSA-ggg2-5wvj-2mxq: A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka
A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1295, CVE-2019-1296.
GHSA
GHSA-8v5f-39c3-2567: A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from unsafe data input, aka 'Microsoft Share
ghsa_unreviewed·2022-05-24·CVSS 8.8
CVE-2019-1296 [HIGH] GHSA-8v5f-39c3-2567: A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from unsafe data input, aka 'Microsoft Share
A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from unsafe data input, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1257, CVE-2019-1295.
GHSA
GHSA-jqvv-p84x-4w7w: A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from unsafe data input, aka 'Microsoft Share
ghsa_unreviewed·2022-05-24·CVSS 8.8
CVE-2019-1295 [HIGH] GHSA-jqvv-p84x-4w7w: A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from unsafe data input, aka 'Microsoft Share
A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from unsafe data input, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1257, CVE-2019-1296.
Microsoft
Microsoft SharePoint Remote Code Execution Vulnerability
vendor_msrc·2019-09-10·CVSS 8.8
CVE-2019-1257 [HIGH] Microsoft SharePoint Remote Code Execution Vulnerability
Microsoft SharePoint Remote Code Execution Vulnerability
Description: A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account.
Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected version of SharePoint.
The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages.
FAQ: Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.
Microsoft Office
No detection rules found.
Trendmicro
Code Execution on Microsoft SharePoint through BDC Deserialization
blogs_trendmicro·2019-09-19·CVSS 9.8
CVE-2019-1257 [CRITICAL] Code Execution on Microsoft SharePoint through BDC Deserialization
## CVE-2019-1257: Code Execution on Microsoft SharePoint Through BDC Deserialization
Discover code execution on Microsoft SharePoint through BDC deserialization.
By: Zero Day Initiative 2019/09/19 Read time: ( words)
Save to Folio
Earlier this year, researcher Markus Wulftange ( @mwulftange ) reported a remote code execution (RCE) vulnerability in Microsoft SharePoint that ended up being patched as CVE-2019-0604 . He wasn’t done. In September, three additional SharePoint RCEs reported by Markus were addressed by Microsoft: CVE-2019-1295 , CVE-2019-1296 , and CVE-2019-1257 . This blog looks at that last CVE, also known as ZDI-19-812 , in greater detail. This bug affects all supported versions of SharePoint and received Microsoft’s highest Exploit Index rating, which means they expect to
Trendmicro
Code Execution on Microsoft SharePoint through BDC Deserialization
blogs_trendmicro·2019-09-19·CVSS 9.8
CVE-2019-1257 [CRITICAL] Code Execution on Microsoft SharePoint through BDC Deserialization
# CVE-2019-1257: Code Execution on Microsoft SharePoint Through BDC Deserialization
Discover code execution on Microsoft SharePoint through BDC deserialization.
By: Zero Day Initiative
2019/09/19
Read time: ( words)
Save to Folio
Earlier this year, researcher Markus Wulftange (@mwulftange) reported a remote code execution (RCE) vulnerability in Microsoft SharePoint that ended up being patched as CVE-2019-0604. He wasn’t done. In September, three additional SharePoint RCEs reported by Markus were addressed by Microsoft: CVE-2019-1295, CVE-2019-1296, and CVE-2019-1257. This blog looks at that last CVE, also known as ZDI-19-812, in greater detail. This bug affects all supported versions of SharePoint and received Microsoft’s highest Exploit Index rating, which means they expect to see ac
Trendmicro
September Patch Tuesday: RDP Vulns and Zero-Days
blogs_trendmicro·2019-09-11·CVSS 8.8
[HIGH] September Patch Tuesday: RDP Vulns and Zero-Days
Exploits & Vulnerabilities
# September Patch Tuesday: RDP Vulns and Zero-Days
Microsoft’s September Patch Tuesday covered a total of 80 CVEs, 17 of which were rated critical.
By: Trend Micro
2019/09/11
Read time: ( words)
Save to Folio
Microsoft’s September Patch Tuesday covered 80 CVEs, 17 of which were rated critical, and included patches for Azure DevOps Server, Chakra Scripting engine, and Microsoft SharePoint. Sixty-two were labeled as important and included patches for Microsoft Excel, Microsoft Edge, and Microsoft Exchange. Only one was rated as moderate.
### Remote desktop vulnerabilities
Continuing the trend from last month, several of the critical patches were for Remote Desktop Clients and are CVE-2019-0787, CVE-2019-0788, CVE-2019-1290, and CVE-2019-1291 — all Remote Co
Trendmicro
September Patch Tuesday: RDP Vulns and Zero-Days
blogs_trendmicro·2019-09-11·CVSS 8.8
[HIGH] September Patch Tuesday: RDP Vulns and Zero-Days
# September Patch Tuesday: RDP Vulns and Zero-Days
Microsoft’s September Patch Tuesday covered a total of 80 CVEs, 17 of which were rated critical.
By: Trend Micro
Sep 11, 2019
Read time: ( words)
Save to Folio
Microsoft’s September Patch Tuesday covered 80 CVEs, 17 of which were rated critical, and included patches for Azure DevOps Server, Chakra Scripting engine, and Microsoft SharePoint. Sixty-two were labeled as important and included patches for Microsoft Excel, Microsoft Edge, and Microsoft Exchange. Only one was rated as moderate.
### Remote desktop vulnerabilities
Continuing the trend from last month, several of the critical patches were for Remote Desktop Clients and are CVE-2019-0787, CVE-2019-0788, CVE-2019-1290, and CVE-2019-1291 — all Remote Code Execution (RCE) vulnera
Tenable
Microsoft's September 2019 Patch Tuesday: Tenable Roundup
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Qualys
September 2019 Patch Tuesday – 79 Vulns, 17 Critical, Remote Desktop Client, SharePoint, Exploited PrivEsc
blogs_qualys·2019-09-10·CVSS 8.8
[HIGH] September 2019 Patch Tuesday – 79 Vulns, 17 Critical, Remote Desktop Client, SharePoint, Exploited PrivEsc
This month’s Microsoft Patch Tuesday addresses 79 vulnerabilities with 17 of them labeled as Critical. Of the 17 Critical vulns, 8 are for scripting engines and browsers, 4 are for the Remote Desktop Client, and 3 are for SharePoint. In addition, Microsoft has again patched a critical vulnerability in LNK files, along with a vuln in Azure DevOps / TFS. Adobe has also released patches for Flash and Application Manager.
Update: Following Patch Tuesday, Microsoft updated the entries for CVE-2019-1214 and CVE-2019-1215 to remove the “exploited” label.
## Workstation Patches
Scripting Engine, Browser, and LNK patches should be prioritized for workstation-type devices, meaning any system that is used for email or to access the internet via a browser. This includes multi-user servers that are
Qualys
September 2019 Patch Tuesday - 79 Vulns, 17 Critical, Remote Desktop Client, SharePoint, Exploited PrivEsc | Qualys
blogs_qualys·2019-09-10·CVSS 8.8
[HIGH] September 2019 Patch Tuesday - 79 Vulns, 17 Critical, Remote Desktop Client, SharePoint, Exploited PrivEsc | Qualys
This month’s Microsoft Patch Tuesday addresses 79 vulnerabilities with 17 of them labeled as Critical. Of the 17 Critical vulns, 8 are for scripting engines and browsers, 4 are for the Remote Desktop Client, and 3 are for SharePoint. In addition, Microsoft has again patched a critical vulnerability in LNK files, along with a vuln in Azure DevOps / TFS. Adobe has also released patches for Flash and Application Manager.
Update: Following Patch Tuesday, Microsoft updated the entries for CVE-2019-1214 and CVE-2019-1215 to remove the “exploited” label.
### Workstation Patches
Scripting Engine, Browser, and LNK patches should be prioritized for workstation-type devices, meaning any system that is used for email or to access the internet via a browser. This includes multi-user servers that are
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Zscaler found Multiple Security Vulnerabilities | 09-10-2019
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2019-09-11
Published