CVE-2020-10683 dom4j allows External Entities by default which might enable XXE attacks

What is CVE-2020-10683?

CVE-2020-10683 is a critical vulnerability in Canonical Ubuntu Linux, published on 1 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

dom4j before 2.0.3 and 2.1.x before 2.1.3 allows external DTDs and External Entities by default, which might enable XXE attacks. However, there is popular external documentation from OWASP showing how to enable the safe, non-default behavior in any application that uses dom4j.

Weakness: CWE-611

Which versions are affected by CVE-2020-10683?

6 open source packages ship an affected version, including org.dom4j:dom4j and dom4j:dom4j. It affects 38 products.

Products include Canonical Ubuntu Linux, Dom4j Project Dom4j, Netapp Oncommand Api Services, Netapp Oncommand Workflow Automation, Netapp Snap Creator Framework, Netapp Snapcenter and 32 more.

How do I fix CVE-2020-10683?

Upgrade org.dom4j:dom4j to a fixed version for your release line: 2.0.3 or 2.1.3.

Is CVE-2020-10683 being exploited?

There is no known exploitation of CVE-2020-10683 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-10683, DLA-2191-1, GHSA-hwj3-m3p6-hj38, MGASA-2021-0034, ROOT-APP-MAVEN-CVE-2020-10683, SUSE-SU-2020:1382-1 and 4 more.