9.8
CRITICAL
CVE-2017-12621
Apache Commons Jelly XXE Entity Expansion
Description

During Jelly (xml) file parsing with Apache Xerces, if a custom doctype entity is declared with a "SYSTEM" entity with a URL and that entity is used in the body of the Jelly file, during parser instantiation the parser will attempt to connect to said URL. This could lead to XML External Entity (XXE) attacks in Apache Commons Jelly before 1.0.1.

INFO

Published Date :

Sept. 28, 2017, 1:29 a.m.

Last Modified :

Nov. 21, 2024, 3:09 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2017-12621 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-2017-12621 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 Apache commons_jelly
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-2017-12621.

URL Resource
http://www.securityfocus.com/bid/101052 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039444 Third Party Advisory VDB Entry
https://issues.apache.org/jira/browse/JELLY-293 Issue Tracking Patch Vendor Advisory
https://lists.apache.org/thread.html/f1fc3f2c45264af44ce782d54b5908ac95f02bf7ad88bb57bfb04b73%40%3Cdev.commons.apache.org%3E
http://www.securityfocus.com/bid/101052 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039444 Third Party Advisory VDB Entry
https://issues.apache.org/jira/browse/JELLY-293 Issue Tracking Patch Vendor Advisory
https://lists.apache.org/thread.html/f1fc3f2c45264af44ce782d54b5908ac95f02bf7ad88bb57bfb04b73%40%3Cdev.commons.apache.org%3E

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).

Talk to DC Apache Roadshow March 2019

JavaScript CSS HTML

Updated: 5 years, 7 months ago
0 stars 0 fork 0 watcher
Born at : March 19, 2019, 11:56 a.m. This repo has been linked 1 different CVEs too.

Getting started with open source contributions slides.

JavaScript CSS HTML

Updated: 6 years, 1 month ago
1 stars 0 fork 0 watcher
Born at : Sept. 25, 2018, 8:42 p.m. This repo has been linked 1 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-2017-12621 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-12621 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
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/f1fc3f2c45264af44ce782d54b5908ac95f02bf7ad88bb57bfb04b73%40%3Cdev.commons.apache.org%3E [No types assigned]
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/f1fc3f2c45264af44ce782d54b5908ac95f02bf7ad88bb57bfb04b73@%3Cdev.commons.apache.org%3E
  • Reanalysis by [email protected]

    Feb. 09, 2023

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed CPE Configuration OR *cpe:2.3:a:apache:commons-jelly:*:rc6:*:*:*:*:*:* versions up to (including) 1.0.1 OR *cpe:2.3:a:apache:commons_jelly:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1
  • Initial Analysis by [email protected]

    Oct. 10, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.securityfocus.com/bid/101052 No Types Assigned http://www.securityfocus.com/bid/101052 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securitytracker.com/id/1039444 No Types Assigned http://www.securitytracker.com/id/1039444 Third Party Advisory, VDB Entry
    Changed Reference Type https://issues.apache.org/jira/browse/JELLY-293 No Types Assigned https://issues.apache.org/jira/browse/JELLY-293 Issue Tracking, Patch, Vendor Advisory
    Changed Reference Type https://lists.apache.org/thread.html/f1fc3f2c45264af44ce782d54b5908ac95f02bf7ad88bb57bfb04b73@%3Cdev.commons.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/f1fc3f2c45264af44ce782d54b5908ac95f02bf7ad88bb57bfb04b73@%3Cdev.commons.apache.org%3E Issue Tracking, Patch, Vendor Advisory
    Added CWE CWE-611
    Added CPE Configuration OR *cpe:2.3:a:apache:commons-jelly:1.0.1:rc6:*:*:*:*:*:* (and previous)
  • CVE Modified by [email protected]

    Sep. 30, 2017

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/101052 [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 29, 2017

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1039444 [No Types Assigned]
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-2017-12621 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-2017-12621 weaknesses.

Exploit Prediction

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

0.58 }} 0.29%

score

0.75627

percentile

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