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Debian DSA-4514-1 : varnish - security update

2019-09-05T00:00:00
ID DEBIAN_DSA-4514.NASL
Type nessus
Reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2021-01-02T00:00:00

Description

Alf-Andre Walla discovered a remotely triggerable assert in the Varnish web accelerator; sending a malformed HTTP request could result in denial of service.

The oldstable distribution (stretch) is not affected.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4514. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(128510);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/31");

  script_cve_id("CVE-2019-15892");
  script_xref(name:"DSA", value:"4514");

  script_name(english:"Debian DSA-4514-1 : varnish - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Alf-Andre Walla discovered a remotely triggerable assert in the
Varnish web accelerator; sending a malformed HTTP request could result
in denial of service.

The oldstable distribution (stretch) is not affected."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/varnish"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/buster/varnish"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2019/dsa-4514"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the varnish packages.

For the stable distribution (buster), this problem has been fixed in
version 6.1.1-1+deb10u1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:varnish");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/05");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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:"10.0", prefix:"libvarnishapi-dev", reference:"6.1.1-1+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"libvarnishapi2", reference:"6.1.1-1+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"varnish", reference:"6.1.1-1+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"varnish-doc", reference:"6.1.1-1+deb10u1")) 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");
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