6.5
MEDIUM
CVE-2021-27635
SAP NetWeaver AS for JAVA XML Injection Disclosure
Description

SAP NetWeaver AS for JAVA, versions - 7.20, 7.30, 7.31, 7.40, 7.50, allows an attacker authenticated as an administrator to connect over a network and submit a specially crafted XML file in the application because of missing XML Validation, this vulnerability enables attacker to fully compromise confidentiality by allowing them to read any file on the filesystem or fully compromise availability by causing the system to crash. The attack cannot be used to change any data so that there is no compromise as to integrity.

INFO

Published Date :

June 9, 2021, 2:15 p.m.

Last Modified :

Nov. 4, 2021, 1:07 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

1.2
Public PoC/Exploit Available at Github

CVE-2021-27635 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-27635 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Sap netweaver_application_server_for_java
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-27635.

URL Resource
http://packetstormsecurity.com/files/164592/SAP-JAVA-NetWeaver-System-Connections-XML-Injection.html Patch Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2021/Oct/28 Mailing List Patch Third Party Advisory
https://launchpad.support.sap.com/#/notes/3053066 Permissions Required Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Onapsis Security Advisories. https://www.onapsis.com

Updated: 9 months ago
10 stars 1 fork 1 watcher
Born at : March 17, 2021, 5:01 p.m. This repo has been linked 44 different CVEs too.

Reposito to keep track of all my high/critical findings.

Updated: 2 years, 10 months ago
0 stars 0 fork 0 watcher
Born at : Dec. 13, 2020, 10:33 p.m. This repo has been linked 20 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-27635 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-27635 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Nov. 04, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/164592/SAP-JAVA-NetWeaver-System-Connections-XML-Injection.html No Types Assigned http://packetstormsecurity.com/files/164592/SAP-JAVA-NetWeaver-System-Connections-XML-Injection.html Patch, Third Party Advisory, VDB Entry
    Changed Reference Type http://seclists.org/fulldisclosure/2021/Oct/28 No Types Assigned http://seclists.org/fulldisclosure/2021/Oct/28 Mailing List, Patch, Third Party Advisory
  • CVE Modified by [email protected]

    Oct. 22, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/164592/SAP-JAVA-NetWeaver-System-Connections-XML-Injection.html [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 22, 2021

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2021/Oct/28 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 16, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
    Changed Reference Type https://launchpad.support.sap.com/#/notes/3053066 No Types Assigned https://launchpad.support.sap.com/#/notes/3053066 Permissions Required, Vendor Advisory
    Changed Reference Type https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 No Types Assigned https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 Vendor Advisory
    Added CWE NIST CWE-611
    Added CPE Configuration OR *cpe:2.3:a:sap:netweaver_application_server_for_java:7.20:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_application_server_for_java:7.30:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_application_server_for_java:7.31:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_application_server_for_java:7.40:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_application_server_for_java:7.50:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-27635 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-27635 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.28 }} -0.05%

score

0.68827

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability