6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
7.2 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
79.3%
This update for tigervnc fixes the following issues :
CVE-2019-15691: Fixed a use-after-return due to incorrect usage of stack memory in ZRLEDecoder (bsc#1159856).
CVE-2019-15692: Fixed a heap-based buffer overflow in CopyRectDecode (bsc#1160250).
CVE-2019-15693: Fixed a heap-based buffer overflow in TightDecoder::FilterGradient (bsc#1159858).
CVE-2019-15694: Fixed a heap-based buffer overflow, caused by improper error handling in processing MemOutStream (bsc#1160251).
CVE-2019-15695: Fixed a stack-based buffer overflow, which could be triggered from CMsgReader::readSetCursor (bsc#1159860).
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-2020:0159-1.
# The text itself is copyright (C) SUSE.
#
include('compat.inc');
if (description)
{
script_id(133201);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/29");
script_cve_id(
"CVE-2019-15691",
"CVE-2019-15692",
"CVE-2019-15693",
"CVE-2019-15694",
"CVE-2019-15695"
);
script_name(english:"SUSE SLES12 Security Update : tigervnc (SUSE-SU-2020:0159-1)");
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 tigervnc fixes the following issues :
CVE-2019-15691: Fixed a use-after-return due to incorrect usage of
stack memory in ZRLEDecoder (bsc#1159856).
CVE-2019-15692: Fixed a heap-based buffer overflow in CopyRectDecode
(bsc#1160250).
CVE-2019-15693: Fixed a heap-based buffer overflow in
TightDecoder::FilterGradient (bsc#1159858).
CVE-2019-15694: Fixed a heap-based buffer overflow, caused by improper
error handling in processing MemOutStream (bsc#1160251).
CVE-2019-15695: Fixed a stack-based buffer overflow, which could be
triggered from CMsgReader::readSetCursor (bsc#1159860).
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=1159856");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1159858");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1159860");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1160250");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1160251");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1160937");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-15691/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-15692/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-15693/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-15694/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-15695/");
# https://www.suse.com/support/update/announcement/2020/suse-su-20200159-1/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5ea56124");
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 OpenStack Cloud Crowbar 8 :
zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-8-2020-159=1
SUSE OpenStack Cloud 8 :
zypper in -t patch SUSE-OpenStack-Cloud-8-2020-159=1
SUSE OpenStack Cloud 7 :
zypper in -t patch SUSE-OpenStack-Cloud-7-2020-159=1
SUSE Linux Enterprise Server for SAP 12-SP3 :
zypper in -t patch SUSE-SLE-SAP-12-SP3-2020-159=1
SUSE Linux Enterprise Server for SAP 12-SP2 :
zypper in -t patch SUSE-SLE-SAP-12-SP2-2020-159=1
SUSE Linux Enterprise Server 12-SP3-LTSS :
zypper in -t patch SUSE-SLE-SERVER-12-SP3-2020-159=1
SUSE Linux Enterprise Server 12-SP3-BCL :
zypper in -t patch SUSE-SLE-SERVER-12-SP3-BCL-2020-159=1
SUSE Linux Enterprise Server 12-SP2-LTSS :
zypper in -t patch SUSE-SLE-SERVER-12-SP2-2020-159=1
SUSE Linux Enterprise Server 12-SP2-BCL :
zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2020-159=1
SUSE Enterprise Storage 5 :
zypper in -t patch SUSE-Storage-5-2020-159=1
HPE Helion Openstack 8 :
zypper in -t patch HPE-Helion-OpenStack-8-2020-159=1");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:H/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-2019-15695");
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:"2019/12/26");
script_set_attribute(attribute:"patch_publication_date", value:"2020/01/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/23");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libXvnc1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libXvnc1-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:tigervnc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:tigervnc-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:tigervnc-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xorg-x11-Xvnc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xorg-x11-Xvnc-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
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:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES12", "SUSE " + os_ver);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "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 == "SLES12" && (! preg(pattern:"^(2|3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2/3", os_ver + " SP" + sp);
flag = 0;
if (rpm_check(release:"SLES12", sp:"3", reference:"libXvnc1-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"libXvnc1-debuginfo-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"tigervnc-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"tigervnc-debuginfo-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"tigervnc-debugsource-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"xorg-x11-Xvnc-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"xorg-x11-Xvnc-debuginfo-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"libXvnc1-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"libXvnc1-debuginfo-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"tigervnc-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"tigervnc-debuginfo-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"tigervnc-debugsource-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"xorg-x11-Xvnc-1.6.0-18.28.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"xorg-x11-Xvnc-debuginfo-1.6.0-18.28.1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "tigervnc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
novell | suse_linux | libxvnc1 | p-cpe:/a:novell:suse_linux:libxvnc1 |
novell | suse_linux | libxvnc1-debuginfo | p-cpe:/a:novell:suse_linux:libxvnc1-debuginfo |
novell | suse_linux | tigervnc | p-cpe:/a:novell:suse_linux:tigervnc |
novell | suse_linux | tigervnc-debuginfo | p-cpe:/a:novell:suse_linux:tigervnc-debuginfo |
novell | suse_linux | tigervnc-debugsource | p-cpe:/a:novell:suse_linux:tigervnc-debugsource |
novell | suse_linux | xorg-x11-xvnc | p-cpe:/a:novell:suse_linux:xorg-x11-xvnc |
novell | suse_linux | xorg-x11-xvnc-debuginfo | p-cpe:/a:novell:suse_linux:xorg-x11-xvnc-debuginfo |
novell | suse_linux | 12 | cpe:/o:novell:suse_linux:12 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15691
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15692
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15693
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15694
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15695
www.nessus.org/u?5ea56124
bugzilla.suse.com/show_bug.cgi?id=1159856
bugzilla.suse.com/show_bug.cgi?id=1159858
bugzilla.suse.com/show_bug.cgi?id=1159860
bugzilla.suse.com/show_bug.cgi?id=1160250
bugzilla.suse.com/show_bug.cgi?id=1160251
bugzilla.suse.com/show_bug.cgi?id=1160937
www.suse.com/security/cve/CVE-2019-15691/
www.suse.com/security/cve/CVE-2019-15692/
www.suse.com/security/cve/CVE-2019-15693/
www.suse.com/security/cve/CVE-2019-15694/
www.suse.com/security/cve/CVE-2019-15695/
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
7.2 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
79.3%