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CVE-2011-1755

24
FAUCET Score

CVE-2011-1755 describes a denial-of-service vulnerability in jabberd2 versions prior to 2.2.14, also affecting Apple and FedoraProject products. This flaw, stemming from improper recursion detection during XML entity expansion, allows remote attackers to exhaust memory and CPU resources. With a CVSS score of 7.5 (High), the vulnerability is easily exploitable over the network with low attack complexity, leading to a complete loss of availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.2.14CPE matchmatch criteria
cpe:2.3:a:jabberd2:jabberd2:*:*:*:*:*:*:*:*
13CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:13:*:*:*:*:*:*:*
14CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:14:*:*:*:*:*:*:*
15CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:*
< 10.6.8CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.66%
Probability of exploitation in next 30 days
EPSS Percentile
88.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0366 is in the 80th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Network Proxy v 5.4Fixed in: jabberd-0:2.2.8-12.el5sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Network Satellite Server v 5.4Fixed in: jabberd-0:2.2.8-12.el5sat
View patch

Vendor Advisories (1)

redhatCVE-2011-1755Low

jabberd: DoS via the XML "billion laughs attack"

May 31, 2011

References

codex.xiaoka.com / svn/jabberd2/tags/jabberd-2.2.14/ChangeLog
Broken Link
lists.apple.com / archives/Security-announce/2011//Oct/msg00003.html
Mailing List
lists.fedoraproject.org / pipermail/package-announce/2011-June/061341.html
Mailing List
lists.fedoraproject.org / pipermail/package-announce/2011-June/061458.html
Mailing List
lists.fedoraproject.org / pipermail/package-announce/2011-June/061482.html
Mailing List
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatch
secunia.com / advisories/44787
Broken LinkVendor Advisory
secunia.com / advisories/44957
Broken Link
secunia.com / advisories/45112
Broken Link
exchange.xforce.ibmcloud.com / vulnerabilities/67770
Third Party AdvisoryVDB Entry
hermes.opensuse.org / messages/9197650
Broken Link
support.apple.com / kb/HT5002
Third Party Advisory
mail-archive.com / jabberd2%40lists.xiaoka.com/msg01655.html
Release Notes
redhat.com / support/errata/RHSA-2011-0881.html
Broken Link
redhat.com / support/errata/RHSA-2011-0882.html
Broken Link
securityfocus.com / bid/48250
Broken LinkThird Party AdvisoryVDB Entry