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Ubuntu: Security Advisory (USN-6921-2)

๐Ÿ—“๏ธย 31 Jul 2024ย 00:00:00Reported byย Copyright (C) 2024 Greenbone AGTypeย 
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The 'linux-lowlatency' package(s) on Ubuntu 24.04 is missing an update to address multiple security issues including the WeSee flaw and several subsystem vulnerabilities

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# SPDX-FileCopyrightText: 2024 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("1.3.6.1.4.1.25623.1.1.12.2024.6921.2");
  script_cve_id("CVE-2024-25742", "CVE-2024-35984", "CVE-2024-35990", "CVE-2024-35992", "CVE-2024-35997", "CVE-2024-36008", "CVE-2024-36016");
  script_tag(name:"creation_date", value:"2024-07-31 04:07:34 +0000 (Wed, 31 Jul 2024)");
  script_version("2024-07-31T05:05:34+0000");
  script_tag(name:"last_modification", value:"2024-07-31 05:05:34 +0000 (Wed, 31 Jul 2024)");
  script_tag(name:"cvss_base", value:"4.6");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:S/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2024-05-24 01:12:07 +0000 (Fri, 24 May 2024)");

  script_name("Ubuntu: Security Advisory (USN-6921-2)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2024 Greenbone AG");
  script_family("Ubuntu Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU24\.04\ LTS");

  script_xref(name:"Advisory-ID", value:"USN-6921-2");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-6921-2");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'linux-lowlatency' package(s) announced via the USN-6921-2 advisory.");

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

  script_tag(name:"insight", value:"Benedict Schluter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde
discovered that an untrusted hypervisor could inject malicious #VC
interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw
is known as WeSee. A local attacker in control of the hypervisor could use
this to expose sensitive information or possibly execute arbitrary code in
the trusted execution environment. (CVE-2024-25742)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
 - DMA engine subsystem,
 - HID subsystem,
 - I2C subsystem,
 - PHY drivers,
 - TTY drivers,
 - IPv4 networking,
(CVE-2024-35997, CVE-2024-36016, CVE-2024-35990, CVE-2024-35984,
CVE-2024-35992, CVE-2024-36008)");

  script_tag(name:"affected", value:"'linux-lowlatency' package(s) on Ubuntu 24.04.");

  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-deb.inc");

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

res = "";
report = "";

if(release == "UBUNTU24.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-6.8.0-39-lowlatency", ver:"6.8.0-39.39.1", rls:"UBUNTU24.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-6.8.0-39-lowlatency-64k", ver:"6.8.0-39.39.1", rls:"UBUNTU24.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-lowlatency", ver:"6.8.0-39.39.1", rls:"UBUNTU24.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-lowlatency-64k", ver:"6.8.0-39.39.1", rls:"UBUNTU24.04 LTS"))) {
    report += res;
  }

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

exit(0);

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