What is CVE-2022-0217?

CVE-2022-0217 is a vulnerability in Prosody that allows for expansion of recursive entity references from DTDs, which can be exploited by an attacker.

What is the severity of CVE-2022-0217?

The severity of CVE-2022-0217 is high, with a CVSS score of 7.5.

Which software is affected by CVE-2022-0217?

Prosody version up to exclusive 0.11.12 is affected by CVE-2022-0217.

How can CVE-2022-0217 be exploited?

CVE-2022-0217 can be exploited by providing suitable attacker input to trigger the expansion of recursive entity references from DTDs.

Where can I find more information about CVE-2022-0217?

You can find more information about CVE-2022-0217 in the following references: [Reference 1](https://bugzilla.redhat.com/show_bug.cgi?id=2040639), [Reference 2](https://prosody.im/security/advisory_20220113/), [Reference 3](https://prosody.im/security/advisory_20220113/1.patch)

Vulnerability/
CVE-2022-0217

high

7.5

CWE

611 776 20

14/1/2022

26/8/2022

2/8/2024

CVE-2022-0217: XEE

First published: Fri Jan 14 2022(Updated: )

It was discovered that an internal Prosody library to load XML based on libexpat does not properly restrict the XML features allowed in parsed XML data. Reference: <a href="https://prosody.im/security/advisory_20220113.txt">https://prosody.im/security/advisory_20220113.txt</a>

Credit: secalert@redhat.com

Affected Software	Affected Version	How to fix
Prosody Prosody	<0.11.12
redhat/prosody	<0.11.12	0.11.12

Remedy

https://prosody.im/security/advisory_20220113/

Remedy

https://prosody.im/security/advisory_20220113/1.patch

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Reference Links

Frequently Asked Questions

What is CVE-2022-0217?
CVE-2022-0217 is a vulnerability in Prosody that allows for expansion of recursive entity references from DTDs, which can be exploited by an attacker.
What is the severity of CVE-2022-0217?
The severity of CVE-2022-0217 is high, with a CVSS score of 7.5.
Which software is affected by CVE-2022-0217?
Prosody version up to exclusive 0.11.12 is affected by CVE-2022-0217.
How can CVE-2022-0217 be exploited?
CVE-2022-0217 can be exploited by providing suitable attacker input to trigger the expansion of recursive entity references from DTDs.
Where can I find more information about CVE-2022-0217?
You can find more information about CVE-2022-0217 in the following references: [Reference 1](https://bugzilla.redhat.com/show_bug.cgi?id=2040639), [Reference 2](https://prosody.im/security/advisory_20220113/), [Reference 3](https://prosody.im/security/advisory_20220113/1.patch)

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