#VU44258 Resource management error in ejabberd - CVE-2011-4320

Vulnerability identifier: #VU44258

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2011-4320

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ejabberd
Other software / Other software solutions

Vendor: processone

Description

The vulnerability allows a remote #AU# to perform service disruption.

The mod_pubsub module (mod_pubsub.erl) in ejabberd 2.1.8 and 3.0.0-alpha-3 allows remote authenticated users to cause a denial of service (infinite loop) via a stanza with a publish tag that lacks a node attribute.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ejabberd: 2.1.8 - 3.0.0

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External links
https://secunia.com/advisories/46915
https://www.openwall.com/lists/oss-security/2011/11/19/1
https://www.openwall.com/lists/oss-security/2011/11/19/2
https://www.osvdb.org/77302
https://www.process-one.net/en/ejabberd/release_notes/release_note_ejabberd_2.1.9
https://support.process-one.net/browse/EJAB-1498

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.