CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
84.2%
This update for LibVNCServer fixes the following issues :
CVE-2019-15690: Fixed a heap buffer overflow (bsc#1160471).
CVE-2019-15681: Fixed a memory leak which could have allowed to a remote attacker to read stack memory (bsc#1155419).
CVE-2019-20788: Fixed a integer overflow and heap-based buffer overflow via a large height or width value (bsc#1170441).
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.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:1164-2.
# The text itself is copyright (C) SUSE.
#
include('compat.inc');
if (description)
{
script_id(138259);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/01");
script_cve_id("CVE-2019-15681", "CVE-2019-15690", "CVE-2019-20788");
script_xref(name:"IAVA", value:"2020-A-0381");
script_name(english:"SUSE SLED15 / SLES15 Security Update : LibVNCServer (SUSE-SU-2020:1164-2)");
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 LibVNCServer fixes the following issues :
CVE-2019-15690: Fixed a heap buffer overflow (bsc#1160471).
CVE-2019-15681: Fixed a memory leak which could have allowed to a
remote attacker to read stack memory (bsc#1155419).
CVE-2019-20788: Fixed a integer overflow and heap-based buffer
overflow via a large height or width value (bsc#1170441).
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=1155419");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1160471");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1170441");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-15681/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-15690/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-20788/");
# https://www.suse.com/support/update/announcement/2020/suse-su-20201164-2
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bba01468");
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 Module for Packagehub Subpackages 15-SP1 :
zypper in -t patch
SUSE-SLE-Module-Packagehub-Subpackages-15-SP1-2020-1164=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: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:H/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-2019-20788");
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:"2019/10/29");
script_set_attribute(attribute:"patch_publication_date", value:"2020/07/07");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:LibVNCServer-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvncserver0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvncserver0-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
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:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED15 / SLES15", "SUSE " + os_ver);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "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:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP1", os_ver + " SP" + sp);
if (os_ver == "SLED15" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP1", os_ver + " SP" + sp);
flag = 0;
if (rpm_check(release:"SLES15", sp:"1", reference:"LibVNCServer-debugsource-0.9.10-4.14.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"libvncserver0-0.9.10-4.14.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"libvncserver0-debuginfo-0.9.10-4.14.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"LibVNCServer-debugsource-0.9.10-4.14.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"libvncserver0-0.9.10-4.14.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"libvncserver0-debuginfo-0.9.10-4.14.1")) 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, "LibVNCServer");
}
Vendor | Product | Version | CPE |
---|---|---|---|
novell | suse_linux | libvncserver-debugsource | p-cpe:/a:novell:suse_linux:libvncserver-debugsource |
novell | suse_linux | libvncserver0 | p-cpe:/a:novell:suse_linux:libvncserver0 |
novell | suse_linux | libvncserver0-debuginfo | p-cpe:/a:novell:suse_linux:libvncserver0-debuginfo |
novell | suse_linux | 15 | cpe:/o:novell:suse_linux:15 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15681
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15690
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20788
www.nessus.org/u?bba01468
bugzilla.suse.com/show_bug.cgi?id=1155419
bugzilla.suse.com/show_bug.cgi?id=1160471
bugzilla.suse.com/show_bug.cgi?id=1170441
www.suse.com/security/cve/CVE-2019-15681/
www.suse.com/security/cve/CVE-2019-15690/
www.suse.com/security/cve/CVE-2019-20788/
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
84.2%