VAR-201106-0132
Vulnerability from variot - Updated: 2023-12-18 10:48expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before 0.9.7, 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. Ejabberd is an instant messaging server for the Jabber/XMPP protocol. There is an error in processing part of the XML input. ----------------------------------------------------------------------
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TITLE: ejabberd Nested XML Entities Denial of Service Vulnerability
SECUNIA ADVISORY ID: SA44807
VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/44807/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=44807
RELEASE DATE: 2011-06-01
DISCUSS ADVISORY: http://secunia.com/advisories/44807/#comments
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DESCRIPTION: A vulnerability has been reported in ejabberd, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is reported in version 2.1.6. Other versions may also be affected.
SOLUTION: Fixed in the GIT repository.
Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
PROVIDED AND/OR DISCOVERED BY: Debian credits Wouter Coekaerts.
ORIGINAL ADVISORY: https://git.process-one.net/ejabberd/mainline/commit/bd1df027c622e1f96f9eeaac612a6a956c1ff0b6
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. This fixes a vulnerability, which can be exploited by malicious people to cause a DoS (Denial of Service).
For more information: SA44807
SOLUTION: Apply updated packages via the apt-get package manager. ----------------------------------------------------------------------
Frost & Sullivan 2011 Report: Secunia Vulnerability Research \"Frost & Sullivan believes that Secunia continues to be a major player in the vulnerability research market due to its diversity of products that provide best-in-class coverage, quality, and usability.\" This is just one of the key factors that influenced Frost & Sullivan to select Secunia over other companies. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201206-10
http://security.gentoo.org/
Severity: Normal Title: ejabberd: Multiple Denial of Service vulnerabilities Date: June 21, 2012 Bugs: #308047, #370201, #386075 ID: 201206-10
Synopsis
Multiple vulnerabilities have been found in ejabberd, the worst of which allowing for remote Denial of Service.
Background
ejabberd is the Erlang jabber daemon.
Affected packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-im/ejabberd < 2.1.9 >= 2.1.9
Description
Multiple vulnerabilities have been discovered in ejabberd. Please review the CVE identifiers referenced below for details.
Workaround
There is no known workaround at this time.
Resolution
All ejabberd users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-im/ejabberd-2.1.9"
References
[ 1 ] CVE-2010-0305 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0305 [ 2 ] CVE-2011-1753 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1753 [ 3 ] CVE-2011-4320 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4320
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201206-10.xml
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2012 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5 . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
Debian Security Advisory DSA-2248-1 security@debian.org http://www.debian.org/security/ Nico Golde March 31, 2011 http://www.debian.org/security/faq
Package : ejabberd Vulnerability : denial of service Problem type : remote Debian-specific: no CVE ID : CVE-2011-1753
Wouter Coekaerts discovered that ejabberd, a distributed XMPP/Jabber server written in Erlang, is vulnerable to the so-called "billion laughs" attack because it does not prevent entity expansion on received data. This allows an attacker to perform denial of service attacks against the service by sending specially crafted XML data to it.
For the oldstable distribution (lenny), this problem has been fixed in version 2.0.1-6+lenny3.
For the stable distribution (squeeze), this problem has been fixed in version 2.1.5-3+squeeze1.
For the testing distribution (wheezy), this problem will be fixed soon.
For the unstable distribution (sid), this problem has been fixed in version 2.1.6-2.1.
We recommend that you upgrade your ejabberd packages.
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: http://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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"data": "expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before 0.9.7, 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. Ejabberd is an instant messaging server for the Jabber/XMPP protocol. There is an error in processing part of the XML input. ----------------------------------------------------------------------\n\n\nAlerts when vulnerabilities pose a threat to your infrastructure\nThe enhanced reporting module of the Secunia Vulnerability Intelligence Manager (VIM) enables you to combine advisory and ticket information, and generate policy compliance statistics. Using your asset list preferences, customised notifications are issued as soon as a new vulnerability is discovered - a valuable tool for documenting mitigation strategies. \nWatch our quick solution overview:\nhttp://www.youtube.com/user/Secunia#p/a/u/0/M1Y9sJqR2SY\n\n\n----------------------------------------------------------------------\n\nTITLE:\nejabberd Nested XML Entities Denial of Service Vulnerability\n\nSECUNIA ADVISORY ID:\nSA44807\n\nVERIFY ADVISORY:\nSecunia.com\nhttp://secunia.com/advisories/44807/\nCustomer Area (Credentials Required)\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=44807\n\nRELEASE DATE:\n2011-06-01\n\nDISCUSS ADVISORY:\nhttp://secunia.com/advisories/44807/#comments\n\nAVAILABLE ON SITE AND IN CUSTOMER AREA:\n * Last Update\n * Popularity\n * Comments\n * Criticality Level\n * Impact\n * Where\n * Solution Status\n * Operating System / Software\n * CVE Reference(s)\n\nhttp://secunia.com/advisories/44807/\n\nONLY AVAILABLE IN CUSTOMER AREA:\n * Authentication Level\n * Report Reliability\n * Secunia PoC\n * Secunia Analysis\n * Systems Affected\n * Approve Distribution\n * Remediation Status\n * Secunia CVSS Score\n * CVSS\n\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=44807\n\nONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:\n * AUTOMATED SCANNING\n\nhttp://secunia.com/vulnerability_scanning/personal/\nhttp://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/\n\nDESCRIPTION:\nA vulnerability has been reported in ejabberd, which can be exploited\nby malicious people to cause a DoS (Denial of Service). \n\nThe vulnerability is reported in version 2.1.6. Other versions may\nalso be affected. \n\nSOLUTION:\nFixed in the GIT repository. \n\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nPROVIDED AND/OR DISCOVERED BY:\nDebian credits Wouter Coekaerts. \n\nORIGINAL ADVISORY:\nhttps://git.process-one.net/ejabberd/mainline/commit/bd1df027c622e1f96f9eeaac612a6a956c1ff0b6\n\nOTHER REFERENCES:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nDEEP LINKS:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED DESCRIPTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED SOLUTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXPLOIT:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\n----------------------------------------------------------------------\n\nAbout:\nThis Advisory was delivered by Secunia as a free service to help\nprivate users keeping their systems up to date against the latest\nvulnerabilities. \n\nSubscribe:\nhttp://secunia.com/advisories/secunia_security_advisories/\n\nDefinitions: (Criticality, Where etc.)\nhttp://secunia.com/advisories/about_secunia_advisories/\n\n\nPlease Note:\nSecunia recommends that you verify all advisories you receive by\nclicking the link. \nSecunia NEVER sends attached files with advisories. \nSecunia does not advise people to install third party patches, only\nuse those supplied by the vendor. \n\n----------------------------------------------------------------------\n\nUnsubscribe: Secunia Security Advisories\nhttp://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org\n\n----------------------------------------------------------------------\n\n\n. This fixes a vulnerability,\nwhich can be exploited by malicious people to cause a DoS (Denial of\nService). \n\nFor more information:\nSA44807\n\nSOLUTION:\nApply updated packages via the apt-get package manager. ----------------------------------------------------------------------\n\n\nFrost \u0026 Sullivan 2011 Report: Secunia Vulnerability Research\n\\\"Frost \u0026 Sullivan believes that Secunia continues to be a major player in the vulnerability research market due to its diversity of products that provide best-in-class coverage, quality, and usability.\\\" This is just one of the key factors that influenced Frost \u0026 Sullivan to select Secunia over other companies. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\nGentoo Linux Security Advisory GLSA 201206-10\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n http://security.gentoo.org/\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\n Severity: Normal\n Title: ejabberd: Multiple Denial of Service vulnerabilities\n Date: June 21, 2012\n Bugs: #308047, #370201, #386075\n ID: 201206-10\n\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nSynopsis\n========\n\nMultiple vulnerabilities have been found in ejabberd, the worst of\nwhich allowing for remote Denial of Service. \n\nBackground\n==========\n\nejabberd is the Erlang jabber daemon. \n\nAffected packages\n=================\n\n -------------------------------------------------------------------\n Package / Vulnerable / Unaffected\n -------------------------------------------------------------------\n 1 net-im/ejabberd \u003c 2.1.9 \u003e= 2.1.9\n\nDescription\n===========\n\nMultiple vulnerabilities have been discovered in ejabberd. Please\nreview the CVE identifiers referenced below for details. \n\nWorkaround\n==========\n\nThere is no known workaround at this time. \n\nResolution\n==========\n\nAll ejabberd users should upgrade to the latest version:\n\n # emerge --sync\n # emerge --ask --oneshot --verbose \"\u003e=net-im/ejabberd-2.1.9\"\n\nReferences\n==========\n\n[ 1 ] CVE-2010-0305\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0305\n[ 2 ] CVE-2011-1753\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1753\n[ 3 ] CVE-2011-4320\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4320\n\nAvailability\n============\n\nThis GLSA and any updates to it are available for viewing at\nthe Gentoo Security Website:\n\n http://security.gentoo.org/glsa/glsa-201206-10.xml\n\nConcerns?\n=========\n\nSecurity is a primary focus of Gentoo Linux and ensuring the\nconfidentiality and security of our users\u0027 machines is of utmost\nimportance to us. Any security concerns should be addressed to\nsecurity@gentoo.org or alternatively, you may file a bug at\nhttps://bugs.gentoo.org. \n\nLicense\n=======\n\nCopyright 2012 Gentoo Foundation, Inc; referenced text\nbelongs to its owner(s). \n\nThe contents of this document are licensed under the\nCreative Commons - Attribution / Share Alike license. \n\nhttp://creativecommons.org/licenses/by-sa/2.5\n. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA1\n\n- -------------------------------------------------------------------------\nDebian Security Advisory DSA-2248-1 security@debian.org\nhttp://www.debian.org/security/ Nico Golde\nMarch 31, 2011 http://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : ejabberd\nVulnerability : denial of service\nProblem type : remote\nDebian-specific: no\nCVE ID : CVE-2011-1753\n\nWouter Coekaerts discovered that ejabberd, a distributed XMPP/Jabber server\nwritten in Erlang, is vulnerable to the so-called \"billion laughs\" attack\nbecause it does not prevent entity expansion on received data. \nThis allows an attacker to perform denial of service attacks against the\nservice by sending specially crafted XML data to it. \n\n\nFor the oldstable distribution (lenny), this problem has been fixed in\nversion 2.0.1-6+lenny3. \n\nFor the stable distribution (squeeze), this problem has been fixed in\nversion 2.1.5-3+squeeze1. \n\nFor the testing distribution (wheezy), this problem will be fixed soon. \n\nFor the unstable distribution (sid), this problem has been fixed in\nversion 2.1.6-2.1. \n\n\nWe recommend that you upgrade your ejabberd packages. \n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: http://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org\n\n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1.4.11 (GNU/Linux)\n\niEYEARECAAYFAk3lVy8ACgkQHYflSXNkfP9+XwCZASQIxH5wedS/Sv5RVbLq72TX\nBCQAmwa5smfQdADSxcAw9vRXuTPmuck4\n=s7fb\n-----END PGP SIGNATURE-----\n",
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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