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CVE-2011-1756

Published: Jun 21, 2011Updated: Apr 29, 2026 Sources: CVE List NVDCWE-399
NVD MITRE
5.0CVSSMEDIUM
EPSS Score
2.7%
Top 16.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LAu:NC:NI:NA:P
Exploitability
AV:NAccess Vector
Network
AC:LAccess Complexity
Low
Au:NAuthentication
None
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:PAvailability
Partial
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Weaknesses

CWE-399

Affected Products

n/an/a
citadelcitadel
On-prem
Enterprise Software / collaboration-groupware
citadeloss-projectEnterprise Softwareaka webcit, ux, citadel

Exploitability

Official Patch Available

References

http://code.citadel.org/cgit.cgi/git.citadel.org/commit/?id=27c991cc2059f5530d3d4e9689dc976b745f5b0c
code.citadel.org
http://www.securityfocus.com/bid/48071
securityfocus.com
http://packages.debian.org/changelogs/pool/main/c/citadel/citadel_7.37-8+lenny1/changelog
packages.debian.org
and 5 more references View all →

Timeline

Published
Jun 21, 2011
Last Updated
Apr 29, 2026

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