Debian update for prosody



| Updated: 2022-01-19
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-0217
CWE-ID CWE-776
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 prosody (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) XML Entity Expansion

EUVDB-ID: #VU59655

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2022-0217

CWE-ID: CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper validation of untrusted XML data. A remote attacker can send specially crafted data to the affected server and perform a denial of service (DoS) attack.

Mitigation

Update prosody package to one of the following versions: 0.11.2-1+deb10u3, 0.11.9-2+deb11u1.

Vulnerable software versions

prosody (Debian package): 0.11.0-1 - 0.11.7-1

CPE2.3 External links

https://www.debian.org/security/2022/dsa-5047


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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