CVE-2011-1755

Name: CVE-2011-1755
Creator: NVD / NIST
Published: 2011-06-21T02:52:43.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.66%

Last modified Jun 16, 2026

CVE-2011-1755 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 3.66% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

3.66%

88.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-776

Affected Software

Vendor	Product	Versions
Jabberd2	Jabberd2	< 2.2.14
Fedoraproject	Fedora	13
Fedoraproject	Fedora	14
Fedoraproject	Fedora	15
Apple	Mac Os X	< 10.6.8
Apple	Mac Os X	>= 10.7.0, < 10.7.2
Apple	Mac Os X Server	< 10.6.8
Apple	Mac Os X Server	>= 10.7.0, < 10.7.2

References

http://codex.xiaoka.com/svn/jabberd2/tags/jabberd-2.2.14/ChangeLogBroken Link
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.htmlMailing List
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061341.htmlMailing List
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061458.htmlMailing List
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061482.htmlMailing List
http://secunia.com/advisories/44787Broken Link, Vendor Advisory
http://secunia.com/advisories/44957Broken Link
http://secunia.com/advisories/45112Broken Link
http://support.apple.com/kb/HT5002Third Party Advisory
http://www.mail-archive.com/jabberd2%40lists.xiaoka.com/msg01655.htmlRelease Notes
http://www.redhat.com/support/errata/RHSA-2011-0881.htmlBroken Link
http://www.redhat.com/support/errata/RHSA-2011-0882.htmlBroken Link
http://www.securityfocus.com/bid/48250Broken Link, Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=700390Issue Tracking, Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/67770Third Party Advisory, VDB Entry
https://hermes.opensuse.org/messages/9197650Broken Link
http://codex.xiaoka.com/svn/jabberd2/tags/jabberd-2.2.14/ChangeLogBroken Link
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.htmlMailing List
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061341.htmlMailing List
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061458.htmlMailing List
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061482.htmlMailing List
http://secunia.com/advisories/44787Broken Link, Vendor Advisory
http://secunia.com/advisories/44957Broken Link
http://secunia.com/advisories/45112Broken Link
http://support.apple.com/kb/HT5002Third Party Advisory
http://www.mail-archive.com/jabberd2%40lists.xiaoka.com/msg01655.htmlRelease Notes
http://www.redhat.com/support/errata/RHSA-2011-0881.htmlBroken Link
http://www.redhat.com/support/errata/RHSA-2011-0882.htmlBroken Link
http://www.securityfocus.com/bid/48250Broken Link, Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=700390Issue Tracking, Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/67770Third Party Advisory, VDB Entry
https://hermes.opensuse.org/messages/9197650Broken Link

Timeline

Published: Jun 21, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-1755?

How severe is CVE-2011-1755?

CVE-2011-1755 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.66% probability of exploitation in the next 30 days.

How do I fix CVE-2011-1755?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-1755?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST