SUSE SLES15 Security Update : kernel (Live Patch 15 for SLE 15 SP2) (SUSE-SU-2021:2577-1)

high Nessus Plugin ID 152167

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Synopsis

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

Description

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2577-1 advisory.

This update for the Linux Kernel 5.3.18-24_53_4 fixes several issues.

The following security issues were fixed:

- CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that allows to andobtain full root privileges. (bsc#1188062)
- CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/x_tables.c that could allow local provilege escalation. (bsc#1188116)
- CVE-2020-36385: Fixed a use-after-free vulnerability reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called. (bnc#1187050)
- CVE-2021-23133: Fixed a race condition in the SCTP sockets that could lead to kernel privilege escalation from the context of a network service or an unprivileged process. (bnc#1184675)
- CVE-2021-33034: Fixed a use-after-free vulnerability when destroying an hci_chan which leads to writing an arbitrary value. (bnc#1186111)
- CVE-2021-32399: Fixed a race condition in net/bluetooth/hci_request.c for removal of the HCI controller.
(bsc#1184611)
- CVE-2020-36322: Fixed an issue in the FUSE filesystem implementation. This bug was addressed with a previous fix, which turned out was incomplete, and its incompleteness is tracked as CVE-2021-28950.
(bsc#1184211)
- CVE-2021-29154: Fixed an incorrect computation of branch displacements in the BPF JIT compilers, which could allow to execute arbitrary code within the kernel context. (bsc#1184391)
- CVE-2021-3444: The bpf verifier did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to information disclosure (kernel memory), and possibly out-of-bounds writes that could potentially lead to code execution. (bsc#1184170)
- CVE-2021-28660: Fixed an out-of-bounds write in rtw_wx_set_scan which could lead to local escalation of privilege with no additional execution privileges needed. (bsc#1183593)
- CVE-2021-27365: Fixed an issue in certain iSCSI data structures that do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. (bsc#1182715)
- CVE-2021-28688: Fixed some uninitialization pointers in Xen that could result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. (bsc#1183646)
- CVE-2021-27363: Fixed a kernel pointer leak that can be used to determine the address of the iscsi_transport structure. (bsc#1182716)
- CVE-2021-27364: Fixed an issue that provides an unprivileged user the ability of craft Netlink messages.
(bsc#1182717)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

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 kernel-livepatch-5_3_18-24_53_4-default package.

Plugin Details

Severity: High

ID: 152167

File Name: suse_SU-2021-2577-1.nasl

Version: 1.13

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/31/2021

Updated: 6/25/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.5

Percentile: 99.86

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 7.2

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

CVSS Score Source: CVE-2021-28660

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.4

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kernel-livepatch-5_3_18-24_53_4-default, 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: 7/30/2021

Vulnerability Publication Date: 3/7/2021

CISA Known Exploited Vulnerability Due Dates: 10/27/2025

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)

Reference Information

CVE: CVE-2020-36322, CVE-2020-36385, CVE-2021-22555, CVE-2021-23133, CVE-2021-27363, CVE-2021-27364, CVE-2021-27365, CVE-2021-28660, CVE-2021-28688, CVE-2021-29154, CVE-2021-32399, CVE-2021-33034, CVE-2021-33909, CVE-2021-3444

IAVA: 2021-A-0350

SuSE: SUSE-SU-2021:2577-1

Detections

Analytics