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Security Bulletin: IBM Flex System switch firmware products are affected by vulnerabilities in OpenSSL

Description

## Summary The following vulnerabilites in OpenSSL have been addressed by IBM Flex System switch firmware products. ## Vulnerability Details ** CVEID: **[CVE-2020-1971](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1971>) ** DESCRIPTION: **OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference. If the GENERAL_NAME_cmp function contain an EDIPARTYNAME, an attacker could exploit this vulnerability to cause the application to crash. CVSS Base score: 7.5 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/192748](<https://exchange.xforce.ibmcloud.com/vulnerabilities/192748>) 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-2021-23840](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23840>) ** DESCRIPTION: **OpenSSL is vulnerable to a denial of service, caused by an integer overflow in CipherUpdate. By sending an overly long argument, an attacker could exploit this vulnerability to cause the application to crash. CVSS Base score: 7.5 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/196848](<https://exchange.xforce.ibmcloud.com/vulnerabilities/196848>) 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-2021-23841](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23841>) ** DESCRIPTION: **OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference in the X509_issuer_and_serial_hash() function. By parsing the issuer field, an attacker could exploit this vulnerability to cause the application to crash. CVSS Base score: 7.5 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/196847](<https://exchange.xforce.ibmcloud.com/vulnerabilities/196847>) 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-2021-3712](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3712>) ** DESCRIPTION: **OpenSSL could allow a remote attacker to obtain sensitive information, caused by an out-of-bounds read when processing ASN.1 strings. By sending specially crafted data, an attacker could exploit this vulnerability to read contents of memory on the system or perform a denial of service attack. CVSS Base score: 6.5 CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/208073](<https://exchange.xforce.ibmcloud.com/vulnerabilities/208073>) for the current score. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L) ## Affected Products and Versions Affected Product| Version ---|--- IBM Flex System EN2092 1Gb Ethernet Scalable Switch| 7.8 IBM Flex System Fabric SI4093 GbFSIM 10Gb Scalable Switch| 7.8 IBM Flex System Fabric EN4093/EN4093R 10Gb Scalable Switch| 7.8 IBM Flex System CN4093 10Gb Converged Scalable Switch| 7.8 ## Remediation/Fixes Firmware fix versions are available on Fix Central: <http://www.ibm.com/support/fixcentral/> Product| Fix Version ---|--- IBM Flex System EN2092 1Gb Ethernet Scalable Switch firmware (ibm_fw_scsw_en2092-7.8.31.0_anyos_noarch) | 7.8.31.0 IBM Flex System Fabric SI4093 System Interconnect Module firmware (ibm_fw_scsw_si4093-7.8.31.0_anyos_noarch) | 7.8.31.0 IBM Flex System Fabric EN4093/EN4093R 10Gb Scalable Switch firmware (ibm_fw_scsw_en4093r-7.8.31.0_anyos_noarch) | 7.8.31.0 IBM Flex System CN4093 10Gb Converged Scalable Switch firmware (ibm_fw_scsw_cn4093-7.8.31.0_anyos_noarch) | 7.8.31.0 ## 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" ) ## Change History 28 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":"BU050","label":"BU NOT IDENTIFIED"},"Product":{"code":"SSWLYD","label":"PureFlex System \u0026amp; Flex System"},"Component":"Switch Software","Platform":[{"code":"PF009","label":"Firmware"}],"Version":"All","Edition":""}]


Affected Software


CPE Name Name Version
ibm flex system en2092 1gb ethernet scalable switch 7.8
ibm flex system fabric si4093 gbfsim 10gb scalable switch 7.8
ibm flex system fabric en4093/en4093r 10gb scalable switch 7.8
ibm flex system cn4093 10gb converged scalable switch 7.8

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