Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2020-1269)

Published: 2020-03-19 13:43:06
CVE Author: NIST National Vulnerability Database

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

Summary:
The remote host is missing an update for the Huawei EulerOS 'kernel' Linux Distribution Package(s) announced via the EulerOS-SA-2020-1269 advisory.

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

Technical Details:
In the tun subsystem in the Linux kernel before 4.13.14, dev_get_valid_name is not called before register_netdevice. This allows local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. This is similar to CVE-2013-4343.(CVE-2018-7191) A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures, aka CID-ffdde5932042.(CVE-2019-19062) An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact, aka CID-19fad20d15a6.(CVE-2019-18805) In the Linux kernel before 5.0, a memory leak exists in sit_init_net() in net/ipv6/sit.c when register_netdev() fails to register sitn-fb_tunnel_dev, which may cause denial of service, aka CID-07f12b26e21a.(CVE-2019-16994) An issue was discovered in the Linux kernel before 5.0.6. There is a memory leak issue when idr_alloc() fails in genl_register_family() in net/netlink/genetlink.c.(CVE-2019-15921) In the Linux kernel before 5.1.13, there is a memory leak in drivers/scsi/libsas/sas_expander.c when SAS expander discovery fails. This will cause a BUG and denial of service.(CVE-2019-15807) An issue was discovered in xfs_setattr_nonsize in fs/xfs/xfs_iops.c in the Linux kernel through 5.2.9. XFS partially wedges when a chgrp fails on account of being out of disk quota. xfs_setattr_nonsize is failing to unlock the ILOCK after the xfs_qm_vop_chown_reserve call fails. This is primarily a local DoS attack vector, but it might result as well in remote DoS if the XFS filesystem is exported for instance via NFS.(CVE-2019-15538) An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring-first' and 'ring-last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system.(CVE-2019-14821) ** DISPUTED ** An issue was discovered in ip_ra_control in net/ipv4 ... Description truncated. Please see the references for more information.

Affected Versions:
'kernel' Linux Distribution Package(s) on Huawei EulerOS Virtualization 3.0.2.2.

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-2017-5897
https://nvd.nist.gov/vuln/detail/CVE-2018-16871
https://nvd.nist.gov/vuln/detail/CVE-2018-16884
https://nvd.nist.gov/vuln/detail/CVE-2018-20856
https://nvd.nist.gov/vuln/detail/CVE-2018-20976
https://nvd.nist.gov/vuln/detail/CVE-2018-7191
https://nvd.nist.gov/vuln/detail/CVE-2019-12378
https://nvd.nist.gov/vuln/detail/CVE-2019-12381
https://nvd.nist.gov/vuln/detail/CVE-2019-14821
https://nvd.nist.gov/vuln/detail/CVE-2019-15538
https://nvd.nist.gov/vuln/detail/CVE-2019-15807
https://nvd.nist.gov/vuln/detail/CVE-2019-15921
https://nvd.nist.gov/vuln/detail/CVE-2019-16994
https://nvd.nist.gov/vuln/detail/CVE-2019-18805
https://nvd.nist.gov/vuln/detail/CVE-2019-19062
https://nvd.nist.gov/vuln/detail/CVE-2019-3882

References:

https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1269

Severity
High
CVSS Score
7.8
Published
2020-03-19
Modified
2020-03-20
Category
Huawei EulerOS Local Security Checks

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