SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2023:4414-1)

critical Nessus Plugin ID 185462

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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-2023:4414-1 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 out-of-bounds read vulnerability was found in the SR-IPv6 implementation in the Linux kernel. The flaw exists within the processing of seg6 attributes. The issue results from the improper validation of user- supplied data, which can result in a read past the end of an allocated buffer. This flaw allows a privileged local user to disclose sensitive information on affected installations of the Linux kernel.
(CVE-2023-2860)

- 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)

- An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel. (CVE-2023-39191)

- 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://bugzilla.suse.com/1208788

https://bugzilla.suse.com/1211162

https://bugzilla.suse.com/1211307

https://bugzilla.suse.com/1212423

https://bugzilla.suse.com/1213705

https://bugzilla.suse.com/1213772

https://bugzilla.suse.com/1214754

https://bugzilla.suse.com/1214874

https://bugzilla.suse.com/1215104

https://bugzilla.suse.com/1215523

https://bugzilla.suse.com/1215545

https://bugzilla.suse.com/1215921

https://bugzilla.suse.com/1215955

https://bugzilla.suse.com/1215986

https://bugzilla.suse.com/1216062

https://bugzilla.suse.com/1216202

https://bugzilla.suse.com/1216322

https://bugzilla.suse.com/1216323

https://bugzilla.suse.com/1216324

https://bugzilla.suse.com/1216333

https://bugzilla.suse.com/1216345

https://bugzilla.suse.com/1216512

http://www.nessus.org/u?12d7f3d9

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

https://www.suse.com/security/cve/CVE-2023-2860

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-2023-39191

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

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

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

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

Plugin Details

Severity: Critical

ID: 185462

File Name: suse_SU-2023-4414-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/11/2023

Updated: 1/17/2024

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: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2023-5178

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: CVSS:3.0/E:U/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 Ease: No known exploits are available

Patch Publication Date: 11/10/2023

Vulnerability Publication Date: 9/30/2022

Reference Information

CVE: CVE-2023-2163, CVE-2023-2860, CVE-2023-31085, CVE-2023-34324, CVE-2023-3777, CVE-2023-39189, CVE-2023-39191, CVE-2023-39193, CVE-2023-45862, CVE-2023-46813, CVE-2023-5178

SuSE: SUSE-SU-2023:4414-1