Debian: Security Advisory (DSA-4954-1)

# 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("1.3.6.1.4.1.25623.1.0.704954");
  script_cve_id("CVE-2021-3672");
  script_tag(name:"creation_date", value:"2021-08-12 03:00:06 +0000 (Thu, 12 Aug 2021)");
  script_version("2024-02-02T05:06:07+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-12-14 18:29:10 +0000 (Tue, 14 Dec 2021)");

  script_name("Debian: Security Advisory (DSA-4954-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 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:"DSA-4954-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2021/DSA-4954-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4954");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/c-ares");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'c-ares' package(s) announced via the DSA-4954-1 advisory.");

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

  script_tag(name:"insight", value:"Philipp Jeitner and Haya Shulman discovered a flaw in c-ares, a library that performs DNS requests and name resolution asynchronously. Missing input validation of hostnames returned by DNS servers can lead to output of wrong hostnames (leading to Domain Hijacking).

For the stable distribution (buster), this problem has been fixed in version 1.14.0-1+deb10u1.

We recommend that you upgrade your c-ares packages.

For the detailed security status of c-ares please refer to its security tracker page at: [link moved to references]");

  script_tag(name:"affected", value:"'c-ares' 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:"libc-ares-dev", ver:"1.14.0-1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc-ares2", ver:"1.14.0-1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

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

exit(0);