Debian: Security Advisory (DSA-4685-1)

# SPDX-FileCopyrightText: 2020 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("1.3.6.1.4.1.25623.1.0.704685");
  script_cve_id("CVE-2020-3810");
  script_tag(name:"creation_date", value:"2020-05-15 03:00:06 +0000 (Fri, 15 May 2020)");
  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:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-05-18 16:36:24 +0000 (Mon, 18 May 2020)");

  script_name("Debian: Security Advisory (DSA-4685-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 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=DEB(10|9)");

  script_xref(name:"Advisory-ID", value:"DSA-4685-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2020/DSA-4685-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4685");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/apt");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'apt' package(s) announced via the DSA-4685-1 advisory.");

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

  script_tag(name:"insight", value:"Shuaibing Lu discovered that missing input validation in the ar/tar implementations of APT, the high level package manager, could result in denial of service when processing specially crafted deb files.

For the oldstable distribution (stretch), this problem has been fixed in version 1.4.10.

For the stable distribution (buster), this problem has been fixed in version 1.8.2.1.

We recommend that you upgrade your apt packages.

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

  script_tag(name:"affected", value:"'apt' package(s) on Debian 9, 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:"apt", ver:"1.8.2.1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"apt-doc", ver:"1.8.2.1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"apt-transport-https", ver:"1.8.2.1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"apt-utils", ver:"1.8.2.1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libapt-inst2.0", ver:"1.8.2.1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libapt-pkg-dev", ver:"1.8.2.1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libapt-pkg-doc", ver:"1.8.2.1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libapt-pkg5.0", ver:"1.8.2.1", rls:"DEB10"))) {
    report += res;
  }

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

if(release == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"apt", ver:"1.4.10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"apt-doc", ver:"1.4.10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"apt-transport-https", ver:"1.4.10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"apt-utils", ver:"1.4.10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libapt-inst2.0", ver:"1.4.10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libapt-pkg-dev", ver:"1.4.10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libapt-pkg-doc", ver:"1.4.10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libapt-pkg5.0", ver:"1.4.10", rls:"DEB9"))) {
    report += res;
  }

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

exit(0);