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Security Bulletin: IBM RackSwitch firmware products are affected by vulnerabilities in Libxml2

Description

## Summary IBM RackSwitch firmware products have addressed the following vulnerabilities in Libxml2. ## Vulnerability Details ** CVEID: **[CVE-2020-24977](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24977>) ** DESCRIPTION: **GNOME libxml2 is vulnerable to a buffer overflow, caused by improper bounds checking by the xmlEncodeEntitiesInternal function in libxml2/entities.c. By persuading a victim to open a specially-crafted file, a remote attacker could overflow a buffer and execute arbitrary code on the system. CVSS Base score: 7.8 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/187847](<https://exchange.xforce.ibmcloud.com/vulnerabilities/187847>) for the current score. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) ** CVEID: **[CVE-2020-7595](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7595>) ** DESCRIPTION: **The Gnome Project Libxml2 is vulnerable to a denial of service, caused by an error in xmlStringLenDecodeEntities in parser.c. An attacker could exploit this vulnerability to cause the application to enter into an infinite loop. CVSS Base score: 7.5 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/175333](<https://exchange.xforce.ibmcloud.com/vulnerabilities/175333>) for the current score. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) ** CVEID: **[CVE-2019-20388](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20388>) ** DESCRIPTION: **GNOME libxml2 could allow a remote attacker to obtain sensitive information, caused by a xmlSchemaValidateStream memory leak in xmlSchemaPreRun in xmlschemas.c. By persuading a victim to open a specially crafted file, an attacker could exploit this vulnerability to obtain sensitive information. CVSS Base score: 3.3 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/175539](<https://exchange.xforce.ibmcloud.com/vulnerabilities/175539>) for the current score. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N) ** CVEID: **[CVE-2019-19956](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19956>) ** DESCRIPTION: **libxml2 is vulnerable to a denial of service, caused by a memory leak in xmlParseBalancedChunkMemoryRecover in parser.c. By persuading a victim to open a specially crafted file, a remote attacker could exploit this vulnerability to cause the application to crash. CVSS Base score: 3.3 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/173518](<https://exchange.xforce.ibmcloud.com/vulnerabilities/173518>) for the current score. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L) ** CVEID: **[CVE-2018-14404](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14404>) ** DESCRIPTION: **libxml2 is vulnerable to a denial of service, caused by a NULL pointer dereference in the xpath.c:xmlXPathCompOpEval() function. By persuading a victim to open a specially-crafted file, a remote attacker could exploit this vulnerability to cause the application to crash. CVSS Base score: 3.3 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/147260](<https://exchange.xforce.ibmcloud.com/vulnerabilities/147260>) for the current score. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L) ** CVEID: **[CVE-2016-9318](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9318>) ** DESCRIPTION: **Libxml2 could allow a remote attacker to obtain sensitive information, caused by failure to offer a flag directly indicating the status of current document. By using a specially-crafted document to conduct a XML external entity (XXE) attack, an attacker could exploit this vulnerability to obtain sensitive information. CVSS Base score: 5.5 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/119018](<https://exchange.xforce.ibmcloud.com/vulnerabilities/119018>) for the current score. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) ## Affected Products and Versions Affected Product(s)| Version(s) ---|--- G7028| 7.6 G8052| 7.11 G8124/G8124E| 7.11 ## Remediation/Fixes Firmware fix versions are available on Fix Central: <http://www.ibm.com/support/fixcentral/> Product(s)| Version(s) ---|--- IBM RackSwitch G7028 (G7028_Image_7.6.8.0) | 7.6.8.0 IBM RackSwitch G8052 (G8052_Image_7.11.20.0) | 7.11.20.0 IBM RackSwitch G8124/G8124E (G8124_G8124E_Image_7.11.20.0) | 7.11.20.0 ## 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>) [Lenovo Product Security Advisories](<https://support.lenovo.com/us/en/product_security/home> "Lenovo Product Security Advisories" ) ## Acknowledgement ## Change History 17 Mar 2021: 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":"BU050","label":"BU NOT IDENTIFIED"},"Product":{"code":"SSWLYD","label":"PureFlex System & Flex System"},"Component":"Switch Software","Platform":[{"code":"PF009","label":"Firmware"}],"Version":"All","Edition":""}]


Affected Software


CPE Name Name Version
g7028 7.6
g8052 7.11
g8124/g8124e 7.11

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