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[email protected]CVE-2019-8268

HistoryMar 08, 2019 - 11:29 p.m.

CVE-2019-8268

2019-03-0823:29:00

CWE-193

[email protected]

web.nvd.nist.gov

cve-2019-8268

ultravnc

vnc client

off-by-one

code execution

network connectivity

nvd

9.8 High

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

9.8 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access 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

0.009 Low

EPSS

Percentile

82.8%

JSON

UltraVNC revision 1206 has multiple off-by-one vulnerabilities in VNC client code connected with improper usage of ClientConnection::ReadString function, which can potentially result code execution. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1207.

CPENameOperatorVersion
uvnc:ultravncuvnc ultravnclt1.2.2.3
siemens:sinumerik_pcu_base_win7_software\/ipcsiemens sinumerik pcu base win7 software\/ipcle12.01
siemens:sinumerik_pcu_base_win10_software\/ipcsiemens sinumerik pcu base win10 software\/ipclt14.00
siemens:sinumerik_access_mymachine\/p2psiemens sinumerik access mymachine\/p2plt4.8

CPE	Name	Operator	Version
uvnc:ultravnc	uvnc ultravnc	lt	1.2.2.3
siemens:sinumerik_pcu_base_win7_software\/ipc	siemens sinumerik pcu base win7 software\/ipc	le	12.01
siemens:sinumerik_pcu_base_win10_software\/ipc	siemens sinumerik pcu base win10 software\/ipc	lt	14.00
siemens:sinumerik_access_mymachine\/p2p	siemens sinumerik access mymachine\/p2p	lt	4.8

References

cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf

ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-015-ultravnc-off-by-one-error/

www.us-cert.gov/ics/advisories/icsa-20-161-06

9.8 High

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

9.8 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access 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

0.009 Low

EPSS

Percentile

82.8%

JSON

Related for CVE-2019-8268

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