EulerOS 2.0 SP3 : kernel (EulerOS-SA-2021-1079)

high Nessus Plugin ID 145201
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VPR Score: 7.4

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

- A stack information leak flaw was found in s390/s390x in the Linux kernel's memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmm_timeout file. This flaw allows a local user to see the kernel data.(CVE-2020-10773)

- In the Android kernel in the video driver there is a use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.(CVE-2019-9458)

- An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.(CVE-2019-20934)

- A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13.
drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.(CVE-2020-29660)

- An out-of-bounds memory write flaw was found in how the Linux kernel's Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720.
This flaw allows an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.(CVE-2020-14305)

- A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13.
drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.(CVE-2020-29661)

- An issue was discovered in romfs_dev_read in fs/romfs/storage.c in the Linux kernel before 5.8.4.
Uninitialized memory leaks to userspace, aka CID-bcf85fcedfdd.(CVE-2020-29371)

- Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.(CVE-2020-15436)

- The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init
_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.(CVE-2020-15437)

- An issue was discovered in kmem_cache_alloc_bulk in mm/slub.c in the Linux kernel before 5.5.11. The slowpath lacks the required TID increment, aka CID-fd4d9c7d0c71.(CVE-2020-29370)

- A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permission to monitor perf events to corrupt memory and possibly escalate privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.(CVE-2020-14351)

- A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel before 5.8.15 could be used by local attackers to read kernel memory, aka CID-6735b4632def.(CVE-2020-28915)

- A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.(CVE-2020-28974)

- Improper access control in BlueZ may allow an unauthenticated user to potentially enable information disclosure via adjacent access.(CVE-2020-12352)

- In cdev_get of char_dev.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions:
Android-10Android ID: A-153467744(CVE-2020-0305)

- A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service.
The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.(CVE-2020-25643)

- An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN frame modification rules allow bitwise logical operations that can be also applied to the can_dlc field. The privileged user 'root' with CAP_NET_ADMIN can create a CAN frame modification rule that makes the data length code a higher value than the available CAN frame data size. In combination with a configured checksum calculation where the result is stored relatively to the end of the data (e.g.
cgw_csum_xor_rel) the tail of the skb (e.g. frag_list pointer in skb_shared_info) can be rewritten which finally can cause a system crash. Because of a missing check, the CAN drivers may write arbitrary content beyond the data registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames.(CVE-2019-3701)

- In the Android kernel in Pixel C USB monitor driver there is a possible OOB write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.(CVE-2019-9456)

- A pivot_root race condition in fs/ namespace.c in the Linux kernel 4.4.x before 4.4.221, 4.9.x before 4.9.221, 4.14.x before 4.14.178, 4.19.x before 4.19.119, and 5.x before 5.3 allows local users to cause a denial of service (panic) by corrupting a mountpoint reference counter.(CVE-2020-12114)

- A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality.(CVE-2020-25645)

- In kbd_keycode of keyboard.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product:
AndroidVersions: Android kernelAndroid ID:
A-144161459(CVE-2020-0431)

- In blk_mq_queue_tag_busy_iter of blk-mq-tag.c, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product:
AndroidVersions: Android kernelAndroid ID:
A-151939299(CVE-2020-0433)

- In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/ netfilter/ nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff.(CVE-2020-25211)

- A memory out-of-bounds read flaw was found in the Linux kernel before 5.9-rc2 with the ext3/ext4 file system, in the way it accesses a directory with broken indexing. This flaw allows a local user to crash the system if the directory exists. The highest threat from this vulnerability is to system availability.(CVE-2020-14314)

- A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/ nfs/ nfs4proc.c instead of fs/ nfs/ nfs4xdr.c, aka CID-b4487b935452.(CVE-2020-25212)

- The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap rbd block devices, aka CID-f44d04e696fe.(CVE-2020-25284)

- A race condition between hugetlb sysctl handlers in mm/hugetlb.c in the Linux kernel before 5.8.8 could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact, aka CID-17743798d812.(CVE-2020-25285)

- A flaw was found in the Linux kernel before 5.9-rc4.
Memory corruption can be exploited to gain root privileges from unprivileged processes. The highest threat from this vulnerability is to data confidentiality and integrity.(CVE-2020-14386)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected kernel packages.

See Also

http://www.nessus.org/u?83f9eb52

Plugin Details

Severity: High

ID: 145201

File Name: EulerOS_SA-2021-1079.nasl

Version: 1.2

Type: local

Published: 1/20/2021

Updated: 1/22/2021

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: High

VPR Score: 7.4

CVSS v2.0

Base Score: 8.3

Temporal Score: 6.5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:C

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 8.1

Temporal Score: 7.3

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:kernel, p-cpe:/a:huawei:euleros:kernel-debuginfo, p-cpe:/a:huawei:euleros:kernel-debuginfo-common-x86_64, p-cpe:/a:huawei:euleros:kernel-devel, p-cpe:/a:huawei:euleros:kernel-headers, p-cpe:/a:huawei:euleros:kernel-tools, p-cpe:/a:huawei:euleros:kernel-tools-libs, p-cpe:/a:huawei:euleros:perf, p-cpe:/a:huawei:euleros:python-perf, cpe:/o:huawei:euleros:2.0

Required KB Items: Host/local_checks_enabled, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/18/2021

Reference Information

CVE: CVE-2019-20934, CVE-2019-3701, CVE-2019-9456, CVE-2019-9458, CVE-2020-0305, CVE-2020-0431, CVE-2020-0433, CVE-2020-10773, CVE-2020-12114, CVE-2020-12352, CVE-2020-14305, CVE-2020-14314, CVE-2020-14351, CVE-2020-14386, CVE-2020-15436, CVE-2020-15437, CVE-2020-25211, CVE-2020-25212, CVE-2020-25284, CVE-2020-25285, CVE-2020-25643, CVE-2020-25645, CVE-2020-28915, CVE-2020-28974, CVE-2020-29370, CVE-2020-29371, CVE-2020-29660, CVE-2020-29661