CVE-2011-1755

Summary

CVE	CVE-2011-1755
State	PUBLISHED
Assigner	redhat
Source Priority	CVE Program / NVD first with legacy fallback
Published	2011-06-21 02:52:43 UTC
Updated	2026-04-29 01:13:23 UTC
Description	jabberd2 before 2.2.14 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-776 | n/a

Version	Source	Type	Score	Severity	Vector
3.1	[email protected]	Primary	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
2.0	[email protected]	Primary	5		`AV:N/AC:L/Au:N/C:N/I:N/A:P`

CVSS v3.1 Breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector

Network

Access Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Apple	Mac Os X	All	All	All	All
Operating System	Fedoraproject	Fedora	13	All	All	All
Operating System	Fedoraproject	Fedora	14	All	All	All
Operating System	Fedoraproject	Fedora	15	All	All	All
Application	Jabberd2	Jabberd2	All	All	All	All

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Na	N/a	affected n/a	Not specified

References

Reference	Source	Link	Tags
IBM X-Force Exchange	af854a3a-2127-422b-91ae-364da2661108	exchange.xforce.ibmcloud.com	Third Party Advisory, VDB Entry
SUSE update for SUSE Manager - Secunia.com	af854a3a-2127-422b-91ae-364da2661108	secunia.com	Broken Link
Bug 700390 – CVE-2011-1755 jabberd: DoS via the XML "billion laughs attack"	af854a3a-2127-422b-91ae-364da2661108	bugzilla.redhat.com	Issue Tracking, Patch
[SECURITY] Fedora 14 Update: jabberd-2.2.14-1.fc14	af854a3a-2127-422b-91ae-364da2661108	lists.fedoraproject.org	Mailing List
jabberd-2.2.14 release	af854a3a-2127-422b-91ae-364da2661108	www.mail-archive.com	Release Notes
APPLE-SA-2011-10-12-3 OS X Lion v10.7.2 and Security Update 2011-006	af854a3a-2127-422b-91ae-364da2661108	lists.apple.com	Mailing List
Security Alerts - Secunia	af854a3a-2127-422b-91ae-364da2661108	secunia.com	Broken Link
About the security content of OS X Lion v10.7.2 and Security Update 2011-006	af854a3a-2127-422b-91ae-364da2661108	support.apple.com	Third Party Advisory
[SECURITY] Fedora 15 Update: jabberd-2.2.14-1.fc15	af854a3a-2127-422b-91ae-364da2661108	lists.fedoraproject.org	Mailing List
codex.xiaoka.com/svn/jabberd2/tags/jabberd-2.2.14/ChangeLog	af854a3a-2127-422b-91ae-364da2661108	codex.xiaoka.com	Broken Link
jabberd XML Parsing Denial of Service Vulnerability	af854a3a-2127-422b-91ae-364da2661108	www.securityfocus.com	Broken Link, Third Party Advisory, VDB Entry
jabberd Nested XML Entities Denial of Service Vulnerability - Secunia.com	af854a3a-2127-422b-91ae-364da2661108	secunia.com	Broken Link, Vendor Advisory
Support	af854a3a-2127-422b-91ae-364da2661108	www.redhat.com	Broken Link
Support	af854a3a-2127-422b-91ae-364da2661108	www.redhat.com	Broken Link
Hermes - openSUSE Notification Client	af854a3a-2127-422b-91ae-364da2661108	hermes.opensuse.org	Broken Link
[SECURITY] Fedora 13 Update: jabberd-2.2.11-4.fc13	af854a3a-2127-422b-91ae-364da2661108	lists.fedoraproject.org	Mailing List
jabberd-2.2.14 release	MITRE	www.mail-archive.com
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

There are currently no legacy QID mappings associated with this CVE.