Security Bulletin: Multiple Linux Kernel vulnerabilities may affect IBM Storage Scale System

Summary

There are multiple vulnerabilities in the Linux Kernel, used by IBM Storage Scale System, which could allow a denial of service, an attacker to obtain sensitive information or gain elevated privileges on the system . Fixes for these vulnerabilities are available. CVE-2023-3772, CVE-2023-38409, CVE-2023-3567, CVE-2023-0458, CVE-2023-1075, CVE-2023-4622, CVE-2023-1073, CVE-2023-4128, CVE-2023-42753.

Vulnerability Details

CVEID:CVE-2023-3772
**DESCRIPTION:**Linux Kernel is vulnerable to a denial of service, caused by a NULL pointer dereference flaw in the xfrm_update_ae_params() function in the IP framework for transforming packets (XFRM subsystem). By sending a specially crafted request, a local authenticated attacker could exploit this vulnerability to cause the kernel to crash.
CVSS Base score: 5.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261635 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2023-38409
**DESCRIPTION:**Linux Kernel is vulnerable to a denial of service, caused by a flaw in the set_con2fb_map function in drivers/video/fbdev/core/fbcon.c. By sending a specially crafted request, a local attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 2.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261031 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID:CVE-2023-3567
**DESCRIPTION:**Linux Kernel could allow a local authenticated attacker to obtain sensitive information, caused by a use-after-free flaw in the vcs_read function in drivers/tty/vt/vc_screen.c in vc_screen. By sending a specially crafted request, an attacker could exploit this vulnerability to obtain internal kernel information or cause the system to crash.
CVSS Base score: 6.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261504 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H)

CVEID:CVE-2023-0458
**DESCRIPTION:**Linux Kernel could allow a remote authenticated attacker to obtain sensitive information, caused by a speculative pointer dereference in the do_prlimit() function. An attacker could exploit this vulnerability to leak the contents and obtain sensitive information.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/253874 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)

CVEID:CVE-2023-1075
**DESCRIPTION:**Linux Kernel could allow a local authenticated attacker to obtain sensitive information, caused by improper checking for list emptiness by the tls_is_tx_ready() function. By sending a specially crafted request to access a type confused entry to the list_head, an attacker could exploit this vulnerability to obtain the last byte of the confused field that overlaps with rec->tx_ready, and use this information to launch further attacks against the affected system.
CVSS Base score: 2.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/248805 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N)

CVEID:CVE-2023-4622
**DESCRIPTION:**Linux Kernel could allow a local authenticated attacker to gain elevated privileges on the system, caused by a use-after-free flaw in the af_unix component. By sending a specially crafted request, an authenticated attacker could exploit this vulnerability to gain elevated privileges.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/265425 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2023-1073
**DESCRIPTION:**Linux Kernel could allow a physical authenticated attacker to gain elevated privileges on the system, caused by a memory corruption flaw in the human interface device (HID) subsystem. By using a specially crafted USB device , an attacker could exploit this vulnerability to gain elevated privileges or cause a denial of service condition.
CVSS Base score: 6.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/251322 for the current score.
CVSS Vector: (CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2023-4128
**DESCRIPTION:**Linux Kernel could allow a local authenticated attacker to gain elevated privileges on the system, caused by a use-after-free flaw in net/sched/cls_fw.c in classifiers. By sending a specially crafted request, an authenticated attacker could exploit this vulnerability to gain elevated privileges.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/263234 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2023-42753
**DESCRIPTION:**Linux Kernel could allow a local authenticated attacker to execute arbitrary code on the system, caused by an integer underflow due to an array indexing issue in the netfilter ipset subsystem. By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code or cause a denial of service condition.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/266809 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Remediation/Fixes

IBM recommends that you fix this vulnerability by upgrading affected versions of IBM Storage Scale System 3000, 3200, 3500, 5000, 6000 to the following code levels or higher:

V6.1.2.9 or later

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Elastic+Storage+Server+(ESS)&release=6.1.0&platform=All&function=all

V6.1.9.2 or later

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Storage+Scale+System&release=6.1.9&platform=All&function=all

Workarounds and Mitigations

None