Fedora 26 : mod_http2 (2018-63de5f3f6b)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2018-63de5f3f6b.
#

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

if (description)
{
  script_id(109417);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/07");

  script_cve_id("CVE-2018-1302");
  script_xref(name:"FEDORA", value:"2018-63de5f3f6b");

  script_name(english:"Fedora 26 : mod_http2 (2018-63de5f3f6b)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This release includes the latest stable upstream release of mod_http2.
The changes since the last update are :

  - fixes a race condition where aborting streams triggers
    an unnecessary timeout.

  - accurate reporting of h2 data input/output per request
    via mod_logio. Fixes an issue where output sizes where
    counted n-times on reused slave connections. See [issue
    #158](https://github.com/icing/mod_h2/issues/158).

  - normalized connection prefix logging when trace2 is
    enabled for direct h2 connection detection.

----

This update includes the latest upstream release of mod_http2, version
1.10.16. This includes a security fix (CVE-2018-1302) :

When an HTTP/2 stream was destroyed after being handled, mod_http2
could have written a NULL pointer potentially to an already freed
memory.

The memory pools maintained by the server make this vulnerability hard
to trigger in usual configurations, the reporter and the team could
not reproduce it outside debug builds, so it is classified as low
risk.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
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://bodhi.fedoraproject.org/updates/FEDORA-2018-63de5f3f6b"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected mod_http2 package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:mod_http2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:26");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/04/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/30");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^26([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 26", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);


flag = 0;
if (rpm_check(release:"FC26", reference:"mod_http2-1.10.18-1.fc26")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "mod_http2");
}