Test ID:	1.3.6.1.4.1.25623.1.0.117947
Category:	Denial of Service
Title:	ILIAS 6.x <= 6.14, 7.x < 7.6 ilServer Log4j DoS Vulnerability
Summary:	The ilServer Java component of ILIAS is using a version of the; Apache Log4j library which is prone to a denial of service (DoS) vulnerability.
Description:	Summary: The ilServer Java component of ILIAS is using a version of the Apache Log4j library which is prone to a denial of service (DoS) vulnerability. Vulnerability Insight: The following flaw exists in the Log4j library used by the ilServer component: Apache Log4j2 did not protect from uncontrolled recursion from self-referential lookups. When the logging configuration uses a non-default Pattern Layout with a Context Lookup (for example, $${ctx:loginId}), attackers with control over Thread Context Map (MDC) input data can craft malicious input data that contains a recursive lookup, resulting in a StackOverflowError that will terminate the process. Affected Software/OS: The ilServer Java component in ILIAS versions 6.x through 6.14 and 7.x prior to 7.6. Note: The 5.x branch wasn't affected by this flaw because the release 5.4.26 has updated the Log4j version from 1.2.15 directly to 2.17.0. Solution: Update to version 7.6 or later. Notes: - This release updated the Log4j version used in the ilServer component from 2.16.0 to 2.17.0 - The 6.x branch hasn't received an update yet CVSS Score: 4.3 CVSS Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-45105 CERT/CC vulnerability note: VU#930724 https://www.kb.cert.org/vuls/id/930724 Cisco Security Advisory: 20211210 Vulnerabilities in Apache Log4j Library Affecting Cisco Products: December 2021 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032 https://security.netapp.com/advisory/ntap-20211218-0001/ Debian Security Information: DSA-5024 (Google Search) https://www.debian.org/security/2021/dsa-5024 https://logging.apache.org/log4j/2.x/security.html https://www.oracle.com/security-alerts/cpuapr2022.html https://www.oracle.com/security-alerts/cpujan2022.html https://www.oracle.com/security-alerts/cpujul2022.html https://www.zerodayinitiative.com/advisories/ZDI-21-1541/ http://www.openwall.com/lists/oss-security/2021/12/19/1
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