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
88.7%
This update for LibVNCServer fixes the following issues :
security update
added patches fix CVE-2018-21247 [bsc#1173874], uninitialized memory contents are vulnerable to Information leak
LibVNCServer-CVE-2018-21247.patch fix CVE-2019-20839 [bsc#1173875], buffer overflow in ConnectClientToUnixSock()
LibVNCServer-CVE-2019-20839.patch fix CVE-2019-20840 [bsc#1173876], unaligned accesses in hybiReadAndDecode can lead to denial of service
LibVNCServer-CVE-2019-20840.patch fix CVE-2020-14398 [bsc#1173880], improperly closed TCP connection causes an infinite loop in libvncclient/sockets.c
LibVNCServer-CVE-2020-14398.patch fix CVE-2020-14397 [bsc#1173700], NULL pointer dereference in libvncserver/rfbregion.c
LibVNCServer-CVE-2020-14397.patch fix CVE-2020-14399 [bsc#1173743], Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c.
LibVNCServer-CVE-2020-14399.patch fix CVE-2020-14400 [bsc#1173691], Byte-aligned data is accessed through uint16_t pointers in libvncserver/translate.c.
LibVNCServer-CVE-2020-14400.patch fix CVE-2020-14401 [bsc#1173694], potential integer overflows in libvncserver/scale.c
LibVNCServer-CVE-2020-14401.patch fix CVE-2020-14402 [bsc#1173701], out-of-bounds access via encodings.
LibVNCServer-CVE-2020-14402,14403,14404.patch fix CVE-2017-18922 [bsc#1173477], preauth buffer overwrite
This update was imported from the SUSE:SLE-15:Update update project.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2020-1025.
#
# The text description of this plugin is (C) SUSE LLC.
#
include('compat.inc');
if (description)
{
script_id(138828);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/29");
script_cve_id(
"CVE-2017-18922",
"CVE-2018-21247",
"CVE-2019-20839",
"CVE-2019-20840",
"CVE-2020-14397",
"CVE-2020-14398",
"CVE-2020-14399",
"CVE-2020-14400",
"CVE-2020-14401",
"CVE-2020-14402"
);
script_name(english:"openSUSE Security Update : LibVNCServer (openSUSE-2020-1025)");
script_set_attribute(attribute:"synopsis", value:
"The remote openSUSE host is missing a security update.");
script_set_attribute(attribute:"description", value:
"This update for LibVNCServer fixes the following issues :
- security update
- added patches fix CVE-2018-21247 [bsc#1173874],
uninitialized memory contents are vulnerable to
Information leak
+ LibVNCServer-CVE-2018-21247.patch fix CVE-2019-20839
[bsc#1173875], buffer overflow in
ConnectClientToUnixSock()
+ LibVNCServer-CVE-2019-20839.patch fix CVE-2019-20840
[bsc#1173876], unaligned accesses in hybiReadAndDecode
can lead to denial of service
+ LibVNCServer-CVE-2019-20840.patch fix CVE-2020-14398
[bsc#1173880], improperly closed TCP connection causes
an infinite loop in libvncclient/sockets.c
+ LibVNCServer-CVE-2020-14398.patch fix CVE-2020-14397
[bsc#1173700], NULL pointer dereference in
libvncserver/rfbregion.c
+ LibVNCServer-CVE-2020-14397.patch fix CVE-2020-14399
[bsc#1173743], Byte-aligned data is accessed through
uint32_t pointers in libvncclient/rfbproto.c.
+ LibVNCServer-CVE-2020-14399.patch fix CVE-2020-14400
[bsc#1173691], Byte-aligned data is accessed through
uint16_t pointers in libvncserver/translate.c.
+ LibVNCServer-CVE-2020-14400.patch fix CVE-2020-14401
[bsc#1173694], potential integer overflows in
libvncserver/scale.c
+ LibVNCServer-CVE-2020-14401.patch fix CVE-2020-14402
[bsc#1173701], out-of-bounds access via encodings.
+ LibVNCServer-CVE-2020-14402,14403,14404.patch fix
CVE-2017-18922 [bsc#1173477], preauth buffer overwrite
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=1173477");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1173691");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1173694");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1173700");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1173701");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1173743");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1173874");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1173875");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1173876");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1173880");
script_set_attribute(attribute:"solution", value:
"Update the affected LibVNCServer packages.");
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-2017-18922");
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:"2020/06/17");
script_set_attribute(attribute:"patch_publication_date", value:"2020/07/21");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:LibVNCServer-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:LibVNCServer-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libvncclient0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libvncclient0-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libvncserver0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libvncserver0-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.2");
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\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.2", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);
flag = 0;
if ( rpm_check(release:"SUSE15.2", reference:"LibVNCServer-debugsource-0.9.10-lp152.9.8.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"LibVNCServer-devel-0.9.10-lp152.9.8.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"libvncclient0-0.9.10-lp152.9.8.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"libvncclient0-debuginfo-0.9.10-lp152.9.8.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"libvncserver0-0.9.10-lp152.9.8.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"libvncserver0-debuginfo-0.9.10-lp152.9.8.1") ) 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-debugsource / LibVNCServer-devel / libvncclient0 / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
novell | opensuse | libvncserver-debugsource | p-cpe:/a:novell:opensuse:libvncserver-debugsource |
novell | opensuse | libvncserver-devel | p-cpe:/a:novell:opensuse:libvncserver-devel |
novell | opensuse | libvncclient0 | p-cpe:/a:novell:opensuse:libvncclient0 |
novell | opensuse | libvncclient0-debuginfo | p-cpe:/a:novell:opensuse:libvncclient0-debuginfo |
novell | opensuse | libvncserver0 | p-cpe:/a:novell:opensuse:libvncserver0 |
novell | opensuse | libvncserver0-debuginfo | p-cpe:/a:novell:opensuse:libvncserver0-debuginfo |
novell | opensuse | 15.2 | cpe:/o:novell:opensuse:15.2 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18922
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-21247
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20839
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20840
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14397
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14398
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14399
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14400
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14401
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14402
bugzilla.opensuse.org/show_bug.cgi?id=1173477
bugzilla.opensuse.org/show_bug.cgi?id=1173691
bugzilla.opensuse.org/show_bug.cgi?id=1173694
bugzilla.opensuse.org/show_bug.cgi?id=1173700
bugzilla.opensuse.org/show_bug.cgi?id=1173701
bugzilla.opensuse.org/show_bug.cgi?id=1173743
bugzilla.opensuse.org/show_bug.cgi?id=1173874
bugzilla.opensuse.org/show_bug.cgi?id=1173875
bugzilla.opensuse.org/show_bug.cgi?id=1173876
bugzilla.opensuse.org/show_bug.cgi?id=1173880
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
88.7%