Debian DSA-4216-1 : prosody - security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4216. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(110317);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/25");

  script_cve_id("CVE-2018-10847");
  script_xref(name:"DSA", value:"4216");

  script_name(english:"Debian DSA-4216-1 : prosody - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"It was discovered that Prosody, a lightweight Jabber/XMPP server, does
not properly validate client-provided parameters during XMPP stream
restarts, allowing authenticated users to override the realm
associated with their session, potentially bypassing security policies
and allowing impersonation.

Details can be found in the upstream advisory at
https://prosody.im/security/advisory_20180531/");
  script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=900524");
  script_set_attribute(attribute:"see_also", value:"https://prosody.im/security/advisory_20180531/");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/prosody");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/prosody");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/prosody");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2018/dsa-4216");
  script_set_attribute(attribute:"solution", value:
"Upgrade the prosody packages.

For the oldstable distribution (jessie), this problem has been fixed
in version 0.9.7-2+deb8u4.

For the stable distribution (stretch), this problem has been fixed in
version 0.9.12-2+deb9u2.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-10847");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/06/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/06/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:prosody");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2018-2024 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:"8.0", prefix:"prosody", reference:"0.9.7-2+deb8u4")) flag++;
if (deb_check(release:"9.0", prefix:"prosody", reference:"0.9.12-2+deb9u2")) flag++;

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