SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2023:4345-1)

high Nessus Plugin ID 184344

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4345-1 advisory.

- Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape. (CVE-2023-2163)

- An issue was discovered in drivers/mtd/ubi/cdev.c in the Linux kernel 6.2. There is a divide-by-zero error in do_div(sz,mtd->erasesize), used indirectly by ctrl_cdev_ioctl, when mtd->erasesize is 0.
(CVE-2023-31085)

- The vulnerability exists due to improper event handling in Linux kernel. A malicious guest can disable paravirtualized device to cause a deadlock in a backend domain (other than dom0). (CVE-2023-34324)

- A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances. We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.
(CVE-2023-3777)

- A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnl_osf_add_callback function did not validate the user mode controlled opt_num field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure. (CVE-2023-39189)

- A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the flag_count field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure. (CVE-2023-39193)

- An issue was discovered in drivers/usb/storage/ene_ub6250.c for the ENE UB6250 reader driver in the Linux kernel before 6.2.5. An object could potentially extend beyond the end of an allocation. (CVE-2023-45862)

- An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege escalation). This depends on a race condition through which userspace can replace an instruction before the #VC handler reads it. (CVE-2023-46813)

- A use-after-free vulnerability was found in drivers/nvme/target/tcp.c` in `nvmet_tcp_free_crypto` due to a logical bug in the NVMe-oF/TCP subsystem in the Linux kernel. This issue may allow a malicious user to cause a use-after-free and double-free problem, which may permit remote code execution or lead to local privilege escalation in case that the attacker already has local privileges. (CVE-2023-5178)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://www.suse.com/security/cve/CVE-2023-46813

https://www.suse.com/security/cve/CVE-2023-5178

https://bugzilla.suse.com/1208788

https://bugzilla.suse.com/1210778

https://bugzilla.suse.com/1211307

https://bugzilla.suse.com/1212423

https://bugzilla.suse.com/1212649

https://bugzilla.suse.com/1213705

https://bugzilla.suse.com/1214842

https://bugzilla.suse.com/1215095

https://bugzilla.suse.com/1215104

https://bugzilla.suse.com/1215518

https://bugzilla.suse.com/1215745

https://bugzilla.suse.com/1215768

https://bugzilla.suse.com/1215860

https://bugzilla.suse.com/1215955

https://bugzilla.suse.com/1215986

https://bugzilla.suse.com/1216046

https://bugzilla.suse.com/1216051

https://bugzilla.suse.com/1216062

https://bugzilla.suse.com/1216345

https://bugzilla.suse.com/1216510

https://bugzilla.suse.com/1216511

https://bugzilla.suse.com/1216512

https://bugzilla.suse.com/1216621

https://lists.suse.com/pipermail/sle-updates/2023-November/032581.html

https://www.suse.com/security/cve/CVE-2023-2163

https://www.suse.com/security/cve/CVE-2023-31085

https://www.suse.com/security/cve/CVE-2023-34324

https://www.suse.com/security/cve/CVE-2023-3777

https://www.suse.com/security/cve/CVE-2023-39189

https://www.suse.com/security/cve/CVE-2023-39193

https://www.suse.com/security/cve/CVE-2023-45862

Plugin Details

Severity: High

ID: 184344

File Name: suse_SU-2023-4345-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/3/2023

Updated: 6/19/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2023-5178

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kernel-source-azure, p-cpe:/a:novell:suse_linux:kernel-syms-azure, p-cpe:/a:novell:suse_linux:kernel-azure-devel, p-cpe:/a:novell:suse_linux:kernel-devel-azure, p-cpe:/a:novell:suse_linux:kernel-azure, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/2/2023

Vulnerability Publication Date: 3/17/2023

Reference Information

CVE: CVE-2023-2163, CVE-2023-31085, CVE-2023-34324, CVE-2023-3777, CVE-2023-39189, CVE-2023-39193, CVE-2023-45862, CVE-2023-46813, CVE-2023-5178

SuSE: SUSE-SU-2023:4345-1