SUSE SLES12 Security Update : kernel (SUSE-SU-2021:3723-1)

high Nessus Plugin ID 155577

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Synopsis

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

Description

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3723-1 advisory.

- The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID. (CVE-2018-13405)

- The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value. (CVE-2021-33033)

- In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack. (CVE-2021-34556)

- In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.
(CVE-2021-35477)

- A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)

- A flaw was found in the Routing decision classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition.
This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3715)

- hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.
(CVE-2021-37159)

- A flaw was found in the Linux kernel. A use-after-free vulnerability in the NFC stack can lead to a threat to confidentiality, integrity, and system availability. (CVE-2021-3760)

- A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses. (CVE-2021-3772)

- prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write. (CVE-2021-41864)

- The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.
(CVE-2021-42008)

- An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a certain comparison uses values that are not memory sizes. (CVE-2021-42252)

- A heap-based buffer overflow flaw was found in the Linux kernel FireDTV media card driver, where the user calls the CA_SEND_MSG ioctl. This flaw allows a local user of the host machine to crash the system or escalate privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-42739)

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/1050549

https://bugzilla.suse.com/1065729

https://bugzilla.suse.com/1085030

https://bugzilla.suse.com/1094840

https://bugzilla.suse.com/1114648

https://bugzilla.suse.com/1180624

https://bugzilla.suse.com/1184673

https://bugzilla.suse.com/1186063

https://bugzilla.suse.com/1186109

https://bugzilla.suse.com/1188563

https://bugzilla.suse.com/1188601

https://bugzilla.suse.com/1188983

https://bugzilla.suse.com/1188985

https://bugzilla.suse.com/1190006

https://bugzilla.suse.com/1190067

https://bugzilla.suse.com/1190317

https://bugzilla.suse.com/1190349

https://bugzilla.suse.com/1190351

https://bugzilla.suse.com/1190479

https://bugzilla.suse.com/1190620

https://bugzilla.suse.com/1190795

https://bugzilla.suse.com/1190941

https://bugzilla.suse.com/1191241

https://bugzilla.suse.com/1191315

https://bugzilla.suse.com/1191317

https://bugzilla.suse.com/1191349

https://bugzilla.suse.com/1191450

https://bugzilla.suse.com/1191452

https://bugzilla.suse.com/1191455

https://bugzilla.suse.com/1191500

https://bugzilla.suse.com/1191579

https://bugzilla.suse.com/1191628

https://bugzilla.suse.com/1191662

https://bugzilla.suse.com/1191667

https://bugzilla.suse.com/1191713

https://bugzilla.suse.com/1191801

https://bugzilla.suse.com/1192145

https://bugzilla.suse.com/1192379

https://www.suse.com/security/cve/CVE-2018-13405

https://www.suse.com/security/cve/CVE-2021-33033

https://www.suse.com/security/cve/CVE-2021-34556

https://www.suse.com/security/cve/CVE-2021-3542

https://www.suse.com/security/cve/CVE-2021-35477

https://www.suse.com/security/cve/CVE-2021-3655

https://www.suse.com/security/cve/CVE-2021-3715

https://www.suse.com/security/cve/CVE-2021-37159

https://www.suse.com/security/cve/CVE-2021-3760

https://www.suse.com/security/cve/CVE-2021-3772

https://www.suse.com/security/cve/CVE-2021-41864

https://www.suse.com/security/cve/CVE-2021-42008

https://www.suse.com/security/cve/CVE-2021-42252

https://www.suse.com/security/cve/CVE-2021-42739

http://www.nessus.org/u?7f8987e7

Plugin Details

Severity: High

ID: 155577

File Name: suse_SU-2021-3723-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 11/18/2021

Updated: 7/13/2023

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2021-3760

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/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

CVSS Score Source: CVE-2021-42252

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:cluster-md-kmp-rt, p-cpe:/a:novell:suse_linux:dlm-kmp-rt, p-cpe:/a:novell:suse_linux:gfs2-kmp-rt, p-cpe:/a:novell:suse_linux:kernel-devel-rt, p-cpe:/a:novell:suse_linux:kernel-rt, p-cpe:/a:novell:suse_linux:kernel-rt-base, p-cpe:/a:novell:suse_linux:kernel-rt-devel, p-cpe:/a:novell:suse_linux:kernel-rt_debug, p-cpe:/a:novell:suse_linux:kernel-rt_debug-devel, p-cpe:/a:novell:suse_linux:kernel-source-rt, p-cpe:/a:novell:suse_linux:kernel-syms-rt, p-cpe:/a:novell:suse_linux:ocfs2-kmp-rt, cpe:/o:novell:suse_linux:12

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: 11/17/2021

Vulnerability Publication Date: 7/6/2018

Reference Information

CVE: CVE-2018-13405, CVE-2021-33033, CVE-2021-34556, CVE-2021-3542, CVE-2021-35477, CVE-2021-3655, CVE-2021-3715, CVE-2021-37159, CVE-2021-3760, CVE-2021-3772, CVE-2021-41864, CVE-2021-42008, CVE-2021-42252, CVE-2021-42739

SuSE: SUSE-SU-2021:3723-1