Permissions, Privileges, and Access Controls in Prosody - CVE-2014-2745
Published: April 11, 2014 / Updated: August 4, 2020
Vulnerability identifier: #VU33664
CSH Severity: Medium
CVSS v4.0: 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:U/U:Green
CVE-ID: CVE-2014-2745
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Prosody
Affected software:
Prosody
Prosody
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Prosody before 0.9.4 does not properly restrict the processing of compressed XML elements, which allows remote attackers to cause a denial of service (resource consumption) via a crafted XMPP stream, aka an "xmppbomb" attack, related to core/portmanager.lua and util/xmppstream.lua.
How to mitigate CVE-2014-2745
Install update from vendor's website.
Sources
- http://blog.prosody.im/prosody-0-9-4-released/
- http://hg.prosody.im/0.9/rev/1107d66d2ab2
- http://hg.prosody.im/0.9/rev/a97591d2e1ad
- http://openwall.com/lists/oss-security/2014/04/07/7
- http://openwall.com/lists/oss-security/2014/04/09/1
- http://secunia.com/advisories/57710
- http://www.debian.org/security/2014/dsa-2895
- http://xmpp.org/resources/security-notices/uncontrolled-resource-consumption-with-highly-compressed-xmpp-stanzas/