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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2011-1755
• https://bugzilla.redhat.com/show_bug.cgi?id=700390
• https://exchange.xforce.ibmcloud.com/vulnerabilities/67770
• https://hermes.opensuse.org/messages/9197650
• http://codex.xiaoka.com/svn/jabberd2/tags/jabberd-2.2.14/ChangeLog
• http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061341.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061458.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061482.html
• http://secunia.com/advisories/44787
• http://secunia.com/advisories/44957
• http://secunia.com/advisories/45112
• http://support.apple.com/kb/HT5002
• http://www.mail-archive.com/jabberd2@lists.xiaoka.com/msg01655.html
• http://www.redhat.com/support/errata/RHSA-2011-0881.html
• http://www.redhat.com/support/errata/RHSA-2011-0882.html
• http://www.securityfocus.com/bid/48250
• http://www.mail-archive.com/jabberd2%40lists.xiaoka.com/msg01655.html