Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2021-1028)

# SPDX-FileCopyrightText: 2021 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.1.2.2021.1028");
  script_cve_id("CVE-2020-0444", "CVE-2020-0465", "CVE-2020-0466", "CVE-2020-14351", "CVE-2020-15436", "CVE-2020-15437", "CVE-2020-25668", "CVE-2020-25669", "CVE-2020-25705", "CVE-2020-27067", "CVE-2020-27068", "CVE-2020-27673", "CVE-2020-27675", "CVE-2020-27777", "CVE-2020-27786", "CVE-2020-27815", "CVE-2020-27830", "CVE-2020-28915", "CVE-2020-28941", "CVE-2020-28974", "CVE-2020-29368", "CVE-2020-29370", "CVE-2020-29371", "CVE-2020-29660", "CVE-2020-29661");
  script_tag(name:"creation_date", value:"2021-01-08 21:51:57 +0000 (Fri, 08 Jan 2021)");
  script_version("2024-02-05T14:36:56+0000");
  script_tag(name:"last_modification", value:"2024-02-05 14:36:56 +0000 (Mon, 05 Feb 2024)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-02-09 02:12:54 +0000 (Thu, 09 Feb 2023)");

  script_name("Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2021-1028)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("Huawei EulerOS Local Security Checks");
  script_dependencies("gb_huawei_euleros_consolidation.nasl");
  script_mandatory_keys("ssh/login/euleros", "ssh/login/rpms", re:"ssh/login/release=EULEROS\-2\.0SP9");

  script_xref(name:"Advisory-ID", value:"EulerOS-SA-2021-1028");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2021-1028");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'kernel' package(s) announced via the EulerOS-SA-2021-1028 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"In do_epoll_ctl and ep_loop_check_proc of eventpoll.c, there is a possible use after free due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed.(CVE-2020-0466)

In the l2tp subsystem, 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.(CVE-2020-27067)

In the nl80211_policy policy of nl80211.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed.(CVE-2020-27068)

In audit_free_lsm_field of auditfilter.c, there is a possible bad kfree due to a logic error in audit_data_to_entry. This could lead to local escalation of privilege with no additional execution privileges needed.(CVE-2020-0444)

In various methods of hid-multitouch.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.(CVE-2020-0465)

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)

A flaw was found in the Linux kernels implementation of MIDI, where an attacker with a local account and the permissions to issue an ioctl commands to midi devices, could trigger a use-after-free. A write to this specific memory while freed and before use could cause the flow of execution to change and possibly allow for memory corruption or privilege escalation.(CVE-2020-27786)

Array index out of bounds access when setting extended attributes on journaling filesystems.(CVE-2020-27815)

NULL-ptr deref in the spk_ttyio_receive_buf2() function in spk_ttyio.c(CVE-2020-27830)

An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.(CVE-2020-29368)

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)

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)

A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and ... [Please see the references for more information on the vulnerabilities]");

  script_tag(name:"affected", value:"'kernel' package(s) on Huawei EulerOS V2.0SP9.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "EULEROS-2.0SP9") {

  if(!isnull(res = isrpmvuln(pkg:"kernel", rpm:"kernel~4.19.90~vhulk2011.1.0.h352.eulerosv2r9", rls:"EULEROS-2.0SP9"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-tools", rpm:"kernel-tools~4.19.90~vhulk2011.1.0.h352.eulerosv2r9", rls:"EULEROS-2.0SP9"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-tools-libs", rpm:"kernel-tools-libs~4.19.90~vhulk2011.1.0.h352.eulerosv2r9", rls:"EULEROS-2.0SP9"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python3-perf", rpm:"python3-perf~4.19.90~vhulk2011.1.0.h352.eulerosv2r9", rls:"EULEROS-2.0SP9"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);