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

Security Bulletin


Summary

IBM RackSwitch firmware products have addressed the following vulnerabilities in Libxml2.

Vulnerability Details

CVEID:   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 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
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 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
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 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
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 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
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 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
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 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)
G70287.6
G80527.11
G8124/G8124E7.11

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

References

Off

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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document Location

Worldwide

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Document Information

Modified date:
17 March 2021

UID

ibm16431299