CVE-2022-0217 XML external entity in prosody

High 7.5 Published 26 Aug 2022 Updated 2 Aug 2024

Attackers can exploit XML parsing flaws in Prosody to cause denial of service or read sensitive data via entity expansion and external entity injection.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2022-0217?

CVE-2022-0217 is a high-severity vulnerability in prosody, published on 26 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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. Given suitable attacker input, this results in expansion of recursive entity references from DTDs (CWE-776). In addition, depending on the libexpat version used, it may also allow injections using XML External Entity References (CWE-611).

Weakness: CWE-611, CWE-776

Which versions are affected by CVE-2022-0217?

It affects 1 product.

Linux distribution packages (3)

`prosody` SUSE:Package Hub 15 SP3	All versions	`0.11.12-bp153.2.12.1`
`prosody` openSUSE:Leap 15.3	All versions	`0.11.12-bp153.2.12.1`
`prosody` openSUSE:Tumbleweed	All versions	`0.11.12-1.1`

Products include Prosody Prosody.

How do I fix CVE-2022-0217?

Apply the vendor's patch.

Is CVE-2022-0217 being exploited?

There is no known exploitation of CVE-2022-0217 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2022-0217, DSA-5047-1, UBUNTU-CVE-2022-0217, openSUSE-SU-2022:0012-1, openSUSE-SU-2024:11736-1.