openSUSE Security Update : libssh2_org (openSUSE-2020-2126)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2020-2126.
#
# The text description of this plugin is (C) SUSE LLC.
#

include('compat.inc');

if (description)
{
  script_id(143507);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/06");

  script_cve_id(
    "CVE-2019-17498",
    "CVE-2019-3855",
    "CVE-2019-3856",
    "CVE-2019-3857",
    "CVE-2019-3858",
    "CVE-2019-3859",
    "CVE-2019-3860",
    "CVE-2019-3861",
    "CVE-2019-3862",
    "CVE-2019-3863"
  );

  script_name(english:"openSUSE Security Update : libssh2_org (openSUSE-2020-2126)");

  script_set_attribute(attribute:"synopsis", value:
"The remote openSUSE host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"This update for libssh2_org fixes the following issues :

  - Version update to 1.9.0: [bsc#1178083, jsc#SLE-16922]
    Enhancements and bugfixes :

  - adds ECDSA keys and host key support when using OpenSSL

  - adds ED25519 key and host key support when using OpenSSL
    1.1.1

  - adds OpenSSH style key file reading

  - adds AES CTR mode support when using WinCNG

  - adds PEM passphrase protected file support for Libgcrypt
    and WinCNG

  - adds SHA256 hostkey fingerprint

  - adds libssh2_agent_get_identity_path() and
    libssh2_agent_set_identity_path()

  - adds explicit zeroing of sensitive data in memory

  - adds additional bounds checks to network buffer reads

  - adds the ability to use the server default permissions
    when creating sftp directories

  - adds support for building with OpenSSL no engine flag

  - adds support for building with LibreSSL

  - increased sftp packet size to 256k

  - fixed oversized packet handling in sftp

  - fixed building with OpenSSL 1.1

  - fixed a possible crash if sftp stat gets an unexpected
    response

  - fixed incorrect parsing of the KEX preference string
    value

  - fixed conditional RSA and AES-CTR support

  - fixed a small memory leak during the key exchange
    process

  - fixed a possible memory leak of the ssh banner string

  - fixed various small memory leaks in the backends

  - fixed possible out of bounds read when parsing public
    keys from the server

  - fixed possible out of bounds read when parsing invalid
    PEM files

  - no longer null terminates the scp remote exec command

  - now handle errors when diffie hellman key pair
    generation fails

  - improved building instructions

  - improved unit tests

  - Version update to 1.8.2: [bsc#1130103] Bug fixes :

  - Fixed the misapplied userauth patch that broke 1.8.1

  - moved the MAX size declarations from the public header
    This update was imported from the SUSE:SLE-15:Update
    update project.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1130103");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1178083");
  script_set_attribute(attribute:"solution", value:
"Update the affected libssh2_org packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  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:H/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-3855");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2019-3862");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libssh2-1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libssh2-1-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libssh2-1-32bit-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libssh2-1-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libssh2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libssh2_org-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.1");
  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/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  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, "openSUSE");
if (release !~ "^(SUSE15\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.1", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.1", reference:"libssh2-1-1.9.0-lp151.6.6.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"libssh2-1-debuginfo-1.9.0-lp151.6.6.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"libssh2-devel-1.9.0-lp151.6.6.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"libssh2_org-debugsource-1.9.0-lp151.6.6.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", cpu:"x86_64", reference:"libssh2-1-32bit-1.9.0-lp151.6.6.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", cpu:"x86_64", reference:"libssh2-1-32bit-debuginfo-1.9.0-lp151.6.6.1") ) 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, "libssh2-1 / libssh2-1-debuginfo / libssh2-devel / etc");
}