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Security Bulletin: Apache HTTP Server as used by IBM QRadar SIEM is vulnerable to buffer overflow and denial of service (CVE-2021-44790, CVE-2021-34798, CVE-2021-39275)

Description

## Summary Apache HTTP Server as used by IBM QRadar SIEM contains multiple vulnerabilities which include buffer overflow and denial of service. ## Vulnerability Details ** CVEID: **[CVE-2021-44790](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44790>) ** DESCRIPTION: **Apache HTTP Server is vulnerable to a buffer overflow, caused by improper bounds checking in the mod_lua multipart parser called from Lua scripts). By sending a specially crafted request, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash. CVSS Base score: 9.8 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/215686](<https://exchange.xforce.ibmcloud.com/vulnerabilities/215686>) for the current score. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) ** CVEID: **[CVE-2021-34798](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34798>) ** DESCRIPTION: **Apache HTTP Server is vulnerable to a denial of service, caused by a NULL pointer dereference in httpd core. By sending a specially crafted request, a remote attacker could exploit this vulnerability to cause a denial of service. CVSS Base score: 5.9 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/209518](<https://exchange.xforce.ibmcloud.com/vulnerabilities/209518>) for the current score. CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H) ** CVEID: **[CVE-2021-39275](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39275>) ** DESCRIPTION: **Apache HTTP Server is vulnerable to a buffer overflow, caused by improper bounds checking by the ap_escape_quotes() function. By sending specially crafted input, a remote attacker could write beyond the end of a buffer. CVSS Base score: 3.7 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/209529](<https://exchange.xforce.ibmcloud.com/vulnerabilities/209529>) for the current score. CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N) ## Affected Products and Versions IBM QRadar SIEM 7.5.0 GA IBM QRadar SIEM 7.4.3 GA - 7.4.3 Fix Pack 4 IBM QRadar SIEM 7.3.3 GA - 7.3.3 Fix Pack 10 ## Remediation/Fixes [QRadar / QRM / QVM / QRIF / QNI 7.5.0 Update Pack 1](<https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=IBM%20Security&product=ibm/Other+software/IBM+Security+QRadar+Vulnerability+Manager&release=All&platform=All&function=fixId&fixids=7.5.0-QRADAR-QRSIEM-20220215133427&includeRequisites=1&includeSupersedes=0&downloadMethod=http&source=SAR> "QRadar / QRM / QVM / QRIF / QNI 7.5.0 Update Pack 1" ) [QRadar / QRM / QVM / QRIF / QNI 7.4.3 Fix Pack 4 Interim Fix 04](<https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=IBM%20Security&product=ibm/Other+software/IBM+Security+QRadar+Vulnerability+Manager&release=All&platform=All&function=fixId&fixids=7.4.3-QRADAR-QRSIEM-20220211142137INT&includeRequisites=1&includeSupersedes=0&downloadMethod=http&source=SAR> "QRadar / QRM / QVM / QRIF / QNI 7.4.3 Fix Pack 4 Interim Fix 04" ) [QRadar / QRM / QVM / QRIF / QNI 7.3.3 Fix Pack 10 Interim Fix 02](<https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=IBM%20Security&product=ibm/Other+software/IBM+Security+QRadar+Vulnerability+Manager&release=All&platform=All&function=fixId&fixids=7.3.3-QRADAR-QRSIEM-20220203193207INT&includeRequisites=1&includeSupersedes=0&downloadMethod=http> "QRadar / QRM / QVM / QRIF / QNI 7.3.3 Fix Pack 10 Interim Fix 02" ) ## Workarounds and Mitigations None ## Get Notified about Future Security Bulletins Subscribe to [My Notifications](< http://www-01.ibm.com/software/support/einfo.html>) to be notified of important product support alerts like this. ### References [Complete CVSS v3 Guide](<http://www.first.org/cvss/user-guide> "Link resides outside of ibm.com" ) [On-line Calculator v3](<http://www.first.org/cvss/calculator/3.0> "Link resides outside of ibm.com" ) Off ## Related Information [IBM Secure Engineering Web Portal](<http://www.ibm.com/security/secure-engineering/bulletins.html>) [IBM Product Security Incident Response Blog](<http://www.ibm.com/blogs/psirt>) ## Change History 15 Feb 2022: Initial Publication *The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin. ## Disclaimer Review the [IBM security bulletin disclaimer and definitions](<https://www.ibm.com/support/pages/node/6610583#disclaimer>) regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment. ## Document Location Worldwide [{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSBQAC","label":"IBM QRadar SIEM"},"Component":"","Platform":[{"code":"PF016","label":"Linux"}],"Version":"7.3, 7.4","Edition":"","Line of Business":{"code":"LOB24","label":"Security Software"}}]


Affected Software


CPE Name Name Version
ibm qradar siem 7.3
ibm qradar siem 7.4

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