CentOS: Security Advisory for bpftool (CESA-2021:3327)

Published: 2021-09-02 01:01:07
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C

severity_vector=CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

severity_origin=NVD

severity_date=2020-12-22 17:18:00 +0000 (Tue, 22 Dec 2020)

Summary:
The remote host is missing an update for the 'bpftool' Linux Distribution Package(s) announced via the CESA-2021:3327 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
The kernel Linux Distribution Packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555) * kernel: race condition for removal of the HCI controller (CVE-2021-32399) * kernel: powerpc: RTAS calls can be used to compromise kernel integrity (CVE-2020-27777) * kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation (CVE-2021-29154) * kernel: lack a full memory barrier upon the assignment of a new table value in net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h may lead to DoS (CVE-2021-29650) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * SAN Switch rebooted and caused (?) OpenStack compute node to reboot (BZ#1897576) * sysfs: cannot create duplicate filename '/class/mdio_bus/ixgbe-8100 (BZ#1915449) * XFS: read-only recovery does not update free space accounting in superblock (BZ#1921551) * The memcg_params field of kmem_cache struct contains an old slab address that is to small for the current size of memcg_limited_groups_array_size. (BZ#1951810) * Backport of upstream patch 'net: Update window_clamp if SOCK_RCVBUF is set ' into rhel-7 (BZ#1962196) * Kernel panic in init_cq_frag_buf (BZ#1962499) * futex: futex_requeue can potentially free the pi_state structure twice (BZ#1966856) * be_poll lockup doing ifenslave when netconsole using bond (BZ#1971744) * OCP4.7 nodes panic at BUG_ON in nf_nat_setup_info() (BZ#1972970)

Affected Versions:
'bpftool' Linux Distribution Package(s) on CentOS 7.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2020-27777
https://nvd.nist.gov/vuln/detail/CVE-2021-22555
https://nvd.nist.gov/vuln/detail/CVE-2021-29154
https://nvd.nist.gov/vuln/detail/CVE-2021-29650
https://nvd.nist.gov/vuln/detail/CVE-2021-32399

References:


https://lists.centos.org/pipermail/centos-announce/2021-August/048356.html

Severity
High
CVSS Score
7.2
Published
2021-09-02
Modified
2021-09-03
Category
CentOS Local Security Checks

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