UBUNTU-CVE-2011-1756

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Source
https://ubuntu.com/security/CVE-2011-1756
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2011/UBUNTU-CVE-2011-1756.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2011-1756
Upstream
  • CVE-2011-1756
Withdrawn
2025-07-18T16:42:42Z
Published
2011-06-21T02:52:00Z
Modified
2025-07-16T07:30:46Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

modules/xmpp/serv_xmpp.c in Citadel 7.86 and earlier does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

References

Affected packages

Ubuntu:14.04:LTS / citadel

Package

Name
citadel
Purl
pkg:deb/ubuntu/citadel@8.24-1?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.24-1

Affected versions

8.*
8.16-1ubuntu1
8.20-1
8.22-1
8.22-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "citadel-dbg",
            "binary_version": "8.24-1"
        },
        {
            "binary_name": "citadel-doc",
            "binary_version": "8.24-1"
        },
        {
            "binary_name": "citadel-mta",
            "binary_version": "8.24-1"
        },
        {
            "binary_name": "citadel-server",
            "binary_version": "8.24-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2011/UBUNTU-CVE-2011-1756.json"