Debian DLA-1225-1 : asterisk security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1225-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(105494);
  script_version("3.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2017-17090");

  script_name(english:"Debian DLA-1225-1 : asterisk security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A vulnerability has been discovered in Asterisk, an open source PBX
and telephony toolkit, which may result in resource exhaustion and
denial of service.

CVE-2017-17090: memory leak from chan_skinny. If the chan_skinny (AKA
SCCP protocol) channel driver is flooded with certain requests it can
cause the asterisk process to use excessive amounts of virtual memory
eventually causing asterisk to stop processing requests of any kind.
The chan_skinny driver has been updated to release memory allocations
in a correct manner thereby preventing any possiblity of exhaustion.

For Debian 7 'Wheezy', these problems have been fixed in version
1:1.8.13.1~dfsg1-3+deb7u8.

We recommend that you upgrade your asterisk packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2017/12/msg00028.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/asterisk"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-config");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-dahdi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-mobile");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-mp3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-ooh323");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-voicemail");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-voicemail-imapstorage");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:asterisk-voicemail-odbcstorage");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/02");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2021 Tenable Network Security, Inc.");
  script_family(english:"Debian Local Security Checks");

  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:"7.0", prefix:"asterisk", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-config", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-dahdi", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-dbg", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-dev", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-doc", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-mobile", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-modules", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-mp3", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-mysql", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-ooh323", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-voicemail", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-voicemail-imapstorage", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"asterisk-voicemail-odbcstorage", reference:"1:1.8.13.1~dfsg1-3+deb7u8")) 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");