SUSE SLES15 Security Update : squid (SUSE-SU-2020:1156-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:1156-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(136279);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/13");

  script_cve_id(
    "CVE-2019-12519",
    "CVE-2019-12521",
    "CVE-2019-12528",
    "CVE-2019-18860",
    "CVE-2020-11945",
    "CVE-2020-8517"
  );

  script_name(english:"SUSE SLES15 Security Update : squid (SUSE-SU-2020:1156-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"This update for squid to version 4.11 fixes the following issues :

CVE-2020-11945: Fixed a potential remote code execution vulnerability
when using HTTP Digest Authentication (bsc#1170313).

CVE-2019-12519, CVE-2019-12521: Fixed incorrect buffer handling that
can result in cache poisoning, remote execution, and denial of service
attacks when processing ESI responses (bsc#1169659).

CVE-2020-8517: Fixed a possible denial of service caused by incorrect
buffer management ext_lm_group_acl when processing NTLM Authentication
credentials (bsc#1162691).

CVE-2019-12528: Fixed possible information disclosure when translating
FTP server listings into HTTP responses (bsc#1162689).

CVE-2019-18860: Fixed handling of invalid domain names in cachemgr.cgi
(bsc#1167373).

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE 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://bugzilla.suse.com/show_bug.cgi?id=1162689");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1162691");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1167373");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1169659");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1170313");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-12519/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-12521/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-12528/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-18860/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-11945/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-8517/");
  # https://www.suse.com/support/update/announcement/2020/suse-su-20201156-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2acfa33b");
  script_set_attribute(attribute:"solution", value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server for SAP 15 :

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2020-1156=1

SUSE Linux Enterprise Server 15-LTSS :

zypper in -t patch SUSE-SLE-Product-SLES-15-2020-1156=1

SUSE Linux Enterprise Module for Server Applications 15-SP2 :

zypper in -t patch
SUSE-SLE-Module-Server-Applications-15-SP2-2020-1156=1

SUSE Linux Enterprise Module for Server Applications 15-SP1 :

zypper in -t patch
SUSE-SLE-Module-Server-Applications-15-SP1-2020-1156=1

SUSE Linux Enterprise High Performance Computing 15-LTSS :

zypper in -t patch SUSE-SLE-Product-HPC-15-2020-1156=1

SUSE Linux Enterprise High Performance Computing 15-ESPOS :

zypper in -t patch SUSE-SLE-Product-HPC-15-2020-1156=1");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-11945");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:squid");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:squid-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:squid-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE 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/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES15", "SUSE " + os_ver);

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

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES15" && (! preg(pattern:"^(0|1|2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP0/1/2", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES15", sp:"1", reference:"squid-4.11-5.17.2")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"squid-debuginfo-4.11-5.17.2")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"squid-debugsource-4.11-5.17.2")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"s390x", reference:"squid-4.11-5.17.2")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"s390x", reference:"squid-debuginfo-4.11-5.17.2")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"s390x", reference:"squid-debugsource-4.11-5.17.2")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"squid-4.11-5.17.2")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"squid-debuginfo-4.11-5.17.2")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"squid-debugsource-4.11-5.17.2")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "squid");
}