Debian: Security Advisory (DSA-4689-1)

# 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("1.3.6.1.4.1.25623.1.0.704689");
  script_cve_id("CVE-2020-8616", "CVE-2020-8617");
  script_tag(name:"creation_date", value:"2020-05-21 03:00:12 +0000 (Thu, 21 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:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-05-21 20:04:21 +0000 (Thu, 21 May 2020)");

  script_name("Debian: Security Advisory (DSA-4689-1)");
  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-4689-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2020/DSA-4689-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4689");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/bind9");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'bind9' package(s) announced via the DSA-4689-1 advisory.");

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

  script_tag(name:"insight", value:"Several vulnerabilities were discovered in BIND, a DNS server implementation.

CVE-2019-6477

It was discovered that TCP-pipelined queries can bypass tcp-client limits resulting in denial of service.

CVE-2020-8616

It was discovered that BIND does not sufficiently limit the number of fetches performed when processing referrals. An attacker can take advantage of this flaw to cause a denial of service (performance degradation) or use the recursing server in a reflection attack with a high amplification factor.

CVE-2020-8617

It was discovered that a logic error in the code which checks TSIG validity can be used to trigger an assertion failure, resulting in denial of service.

For the oldstable distribution (stretch), these problems have been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u6.

For the stable distribution (buster), these problems have been fixed in version 1:9.11.5.P4+dfsg-5.1+deb10u1.

We recommend that you upgrade your bind9 packages.

For the detailed security status of bind9 please refer to its security tracker page at: [link moved to references]");

  script_tag(name:"affected", value:"'bind9' 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:"bind9", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"bind9-doc", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"bind9-host", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"bind9utils", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dnsutils", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbind-dev", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbind-export-dev", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbind9-161", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libdns-export1104", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libdns-export1104-udeb", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libdns1104", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libirs-export161", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libirs-export161-udeb", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libirs161", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisc-export1100", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisc-export1100-udeb", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisc1100", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccc-export161", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccc-export161-udeb", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccc161", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccfg-export163", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccfg-export163-udeb", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccfg163", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"liblwres161", ver:"1:9.11.5.P4+dfsg-5.1+deb10u1", 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:"bind9", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"bind9-doc", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"bind9-host", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"bind9utils", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dnsutils", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"host", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbind-dev", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbind-export-dev", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbind9-140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libdns-export162", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libdns-export162-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libdns162", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libirs-export141", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libirs-export141-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libirs141", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisc-export160", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisc-export160-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisc160", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccc-export140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccc-export140-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccc140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccfg-export140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccfg-export140-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccfg140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"liblwres141", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"lwresd", ver:"1:9.10.3.dfsg.P4-12.3+deb9u6", rls:"DEB9"))) {
    report += res;
  }

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

exit(0);