Debian: Security Advisory (DLA-3479-1)

# SPDX-FileCopyrightText: 2023 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("1.3.6.1.4.1.25623.1.1.1.2.2023.3479");
  script_cve_id("CVE-2021-4235", "CVE-2022-3064");
  script_tag(name:"creation_date", value:"2023-07-06 04:23:01 +0000 (Thu, 06 Jul 2023)");
  script_version("2024-02-02T05:06:10+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:10 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-01-06 13:51:52 +0000 (Fri, 06 Jan 2023)");

  script_name("Debian: Security Advisory (DLA-3479-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2023 Greenbone AG");
  script_family("Debian Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB10");

  script_xref(name:"Advisory-ID", value:"DLA-3479-1");
  script_xref(name:"URL", value:"https://www.debian.org/lts/security/2023/DLA-3479-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/golang-yaml.v2");
  script_xref(name:"URL", value:"https://wiki.debian.org/LTS");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'golang-yaml.v2' package(s) announced via the DLA-3479-1 advisory.");

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

  script_tag(name:"insight", value:"Two denial of service vulnerabilities have been discovered in golang-yaml.v2, a library which provides YAML support for the Go language.

CVE-2021-4235

Due to unbounded alias chasing, a maliciously crafted YAML file can cause the system to consume significant system resources. If parsing user input, this may be used as a denial of service vector.

CVE-2022-3064

Parsing malicious or large YAML documents can consume excessive amounts of CPU or memory.

Thanks to Scarlett Moore for working on preparing this update.

For Debian 10 buster, these problems have been fixed in version 2.2.2-1+deb10u1.

We recommend that you upgrade your golang-yaml.v2 packages.

For the detailed security status of golang-yaml.v2 please refer to its security tracker page at: [link moved to references]

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");

  script_tag(name:"affected", value:"'golang-yaml.v2' package(s) on Debian 10.");

  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 == "DEB10") {

  if(!isnull(res = isdpkgvuln(pkg:"golang-gopkg-yaml.v2-dev", ver:"2.2.2-1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"golang-yaml.v2-dev", ver:"2.2.2-1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

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

exit(0);