Debian DSA-4711-1 : coturn - security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4711. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(137888);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/05");

  script_cve_id("CVE-2020-4067", "CVE-2020-6061", "CVE-2020-6062");
  script_xref(name:"DSA", value:"4711");

  script_name(english:"Debian DSA-4711-1 : coturn - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"Several vulnerabilities were discovered in coturn, a TURN and STUN
server for VoIP.

  - CVE-2020-4067
    Felix Doerre reported that the STUN response buffer was
    not properly initialised, which could allow an attacker
    to leak bytes in the padding bytes from the connection
    of another client.

  - CVE-2020-6061
    Aleksandar Nikolic reported that a crafted HTTP POST
    request can lead to information leaks and other
    misbehavior.

  - CVE-2020-6062
    Aleksandar Nikolic reported that a crafted HTTP POST
    request can lead to server crash and denial of service.");
  script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=951876");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-4067");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-6061");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-6062");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/coturn");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/coturn");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/coturn");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2020/dsa-4711");
  script_set_attribute(attribute:"solution", value:
"Upgrade the coturn packages.

For the oldstable distribution (stretch), these problems have been
fixed in version 4.5.0.5-1+deb9u2.

For the stable distribution (buster), these problems have been fixed
in version 4.5.1.1-1.1+deb10u1.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-6061");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/06/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:coturn");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"10.0", prefix:"coturn", reference:"4.5.1.1-1.1+deb10u1")) flag++;
if (deb_check(release:"9.0", prefix:"coturn", reference:"4.5.0.5-1+deb9u2")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");