CVE-2021-33813 XML External Entity (XXE) Injection in JDOM
High 7.5
Published
Updated
Check this codebase for CVE-2021-33813 and fix it if it is affected.
What it is: CVE-2021-33813 is a high-severity vulnerability in Debian Debian Linux, published on 16 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-33813 in the wild and no public exploit code.
Affected packages and fixed versions:
- org.jdom:jdom (Maven): affected all versions up to 2.0.2; no fix listed
- org.jdom:jdom (Maven): affected all versions up to 2.0.2; no fix listed
- solr (Bitnami): affected from 8.8.1; fixed in 8.8.2, 8.9.1
- org.jdom:jdom2 (Maven): affected all versions; fixed in 2.0.6.1
- org.jdom:jdom2 (Maven): affected all versions; fixed in 2.0.6.1
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2021-33813/ (Markdown: https://insights.sbomify.com/CVE-2021-33813/index.md)
Attackers can cause denial of service in applications using JDOM via crafted HTTP requests exploiting an XXE vulnerability in SAXBuilder.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-33813?
CVE-2021-33813 is a high-severity vulnerability in Debian Debian Linux, published on 16 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An XXE issue in SAXBuilder in JDOM through 2.0.6 allows attackers to cause a denial of service via a crafted HTTP request.
Weakness: CWE-611
Which versions are affected by CVE-2021-33813?
5 open source packages ship an affected version, including org.jdom:jdom, solr and org.jdom:jdom2. It affects 6 products.
| Package | Affected | Fixed in |
|---|---|---|
org.jdom:jdom Maven | All versions to 2.0.2 | None |
org.jdom:jdom Maven | All versions to 2.0.2 | None |
solr Bitnami | From 8.8.1 | 8.8.2, 8.9.1 |
org.jdom:jdom2 Maven | All versions | 2.0.6.1 |
org.jdom:jdom2 Maven | All versions | 2.0.6.1 |
Linux distribution packages (35)
jdom SUSE:Enterprise Storage 6 | All versions | 1.1-150000.5.3.1 |
dom4j SUSE:Enterprise Storage 7.1 | All versions | 2.1.4-150200.12.10.2 |
hamcrest SUSE:Enterprise Storage 7.1 | All versions | 2.2-150200.12.17.2 |
jaxen SUSE:Enterprise Storage 7.1 | All versions | 2.0.0-150200.5.3.1 |
jdom SUSE:Enterprise Storage 7.1 | All versions | 1.1.3-150200.12.8.2 |
junit SUSE:Enterprise Storage 7.1 | All versions | 4.13.2-150200.3.15.2 |
objectweb-asm SUSE:Enterprise Storage 7.1 | All versions | 9.7-150200.3.15.2 |
xom SUSE:Enterprise Storage 7.1 | All versions | 1.3.9-150200.5.3.3 |
jdom SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 1.1-150000.5.3.1 |
jdom SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 1.1-150000.5.3.1 |
dom4j SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 2.1.4-150200.12.10.2 |
hamcrest SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 2.2-150200.12.17.2 |
jaxen SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 2.0.0-150200.5.3.1 |
jdom SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 1.1.3-150200.12.8.2 |
junit SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 4.13.2-150200.3.15.2 |
objectweb-asm SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 9.7-150200.3.15.2 |
xom SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 1.3.9-150200.5.3.3 |
dom4j SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 2.1.4-150200.12.10.2 |
hamcrest SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 2.2-150200.12.17.2 |
jaxen SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 2.0.0-150200.5.3.1 |
jdom SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 1.1.3-150200.12.8.2 |
junit SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 4.13.2-150200.3.15.2 |
objectweb-asm SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 9.7-150200.3.15.2 |
xom SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 1.3.9-150200.5.3.3 |
dom4j SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 2.1.4-150200.12.10.2 |
hamcrest SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 2.2-150200.12.17.2 |
jaxen SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 2.0.0-150200.5.3.1 |
jdom SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 1.1.3-150200.12.8.2 |
junit SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 4.13.2-150200.3.15.2 |
objectweb-asm SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 9.7-150200.3.15.2 |
xom SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 1.3.9-150200.5.3.3 |
dom4j SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 2.1.4-150200.12.10.2 |
hamcrest SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 2.2-150200.12.17.2 |
jaxen SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 2.0.0-150200.5.3.1 |
jdom SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 1.1.3-150200.12.8.2 |
Products include Apache Solr, Apache Tika, Debian Debian Linux, Fedoraproject Fedora, Jdom Jdom, Oracle Communications Messaging Server.
How do I fix CVE-2021-33813?
Upgrade to a fixed version.
Is CVE-2021-33813 being exploited?
There is no known exploitation of CVE-2021-33813 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
- CVE-2019-17558 Apache Solr VelocityResponseWriter Plug-In Remote Code Execution
- CVE-2019-0193 Apache Solr DataImportHandler Code Injection
- CVE-2024-45216 Apache Solr: Authentication bypass possible using a fake URL Path ending
- CVE-2021-44548 Apache Solr information disclosure vulnerability through DataImportHandler
- CVE-2021-27905 SSRF vulnerability with the Replication handler
Sources
Also known as AZL-44931, BIT-solr-2021-33813, CLEANSTART-2026-GK30555, CLSA-2025-1766621307, CLSA-2026-1771891818, DEBIAN-CVE-2021-33813 and 15 more.