Mageia: Security Advisory (MGASA-2021-0575)

# SPDX-FileCopyrightText: 2022 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("1.3.6.1.4.1.25623.1.1.10.2021.0575");
  script_cve_id("CVE-2021-39685", "CVE-2021-4083", "CVE-2021-43975");
  script_tag(name:"creation_date", value:"2022-01-28 10:58:44 +0000 (Fri, 28 Jan 2022)");
  script_version("2024-02-02T05:06:09+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:09 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-03-23 16:20:31 +0000 (Wed, 23 Mar 2022)");

  script_name("Mageia: Security Advisory (MGASA-2021-0575)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("Mageia Linux Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/mageia_linux", "ssh/login/release", re:"ssh/login/release=MAGEIA8");

  script_xref(name:"Advisory-ID", value:"MGASA-2021-0575");
  script_xref(name:"URL", value:"https://advisories.mageia.org/MGASA-2021-0575.html");
  script_xref(name:"URL", value:"https://bugs.mageia.org/show_bug.cgi?id=29778");
  script_xref(name:"URL", value:"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.7");
  script_xref(name:"URL", value:"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.8");
  script_xref(name:"URL", value:"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.9");
  script_xref(name:"URL", value:"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.10");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'kernel-linus' package(s) announced via the MGASA-2021-0575 advisory.");

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

  script_tag(name:"insight", value:"This kernel-linus update is based on upstream 5.15.10 and fixes at least the
following security issues:

A read-after-free memory flaw was found in the Linux kernel's garbage
collection for Unix domain socket file handlers in the way users call
close() and fget() simultaneously and can potentially trigger a race
condition. This flaw allows a local user to crash the system or escalate
their privileges on the system (CVE-2021-4083).

An attacker can access kernel memory bypassing valid buffer boundaries by
exploiting implementation of control request handlers in the following usb
gadgets - rndis, hid, uac1, uac1_legacy and uac2. Processing of malicious
control transfer requests with unexpectedly large wLength lacks assurance
that this value does not exceed the buffer size. Due to this fact one is
capable of reading and/or writing (depending on particular case) up to 65k
of kernel memory. Devices implementing affected usb device gadget classes
may be affected by buffer overflow vulnerabilities resulting in information
disclosure, denial of service or execution of arbitrary code in kernel
context (CVE-2021-39685).

In the Linux kernel through 5.15.2, hw_atl_utils_fw_rpc_wait in drivers/net/
ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c allows an attacker (who can
introduce a crafted device) to trigger an out-of-bounds write via a crafted
length value (CVE-2021-43975).

For other upstream fixes, see the referenced changelogs.");

  script_tag(name:"affected", value:"'kernel-linus' package(s) on Mageia 8.");

  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 == "MAGEIA8") {

  if(!isnull(res = isrpmvuln(pkg:"kernel-linus-5.15.10-1.mga8", rpm:"kernel-linus-5.15.10-1.mga8~1~1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-linus", rpm:"kernel-linus~5.15.10~1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-linus-devel-5.15.10-1.mga8", rpm:"kernel-linus-devel-5.15.10-1.mga8~1~1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-linus-devel-latest", rpm:"kernel-linus-devel-latest~5.15.10~1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-linus-doc", rpm:"kernel-linus-doc~5.15.10~1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-linus-latest", rpm:"kernel-linus-latest~5.15.10~1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-linus-source-5.15.10-1.mga8", rpm:"kernel-linus-source-5.15.10-1.mga8~1~1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-linus-source-latest", rpm:"kernel-linus-source-latest~5.15.10~1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

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

exit(0);