CVE-2019-8263
published 2019-03-05CVE-2019-8263: UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of service (DoS)…
PriorityP431medium6.5CVSS 3.1
AVNACLPRNUIRSUCNINAH
EPSS
2.48%
82.6th percentile
UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of service (DoS) condition. This attack appear to be exploitable via network connectivity. User interaction is required to trigger this vulnerability. This vulnerability has been fixed in revision 1206.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| kaspersky_lab | ultravnc | — | — |
| siemens | sinumerik_access_mymachine_p2p | < 4.8 | 4.8 |
| siemens | sinumerik_pcu_base_win10_software_ipc | < 14.00 | 14.00 |
| siemens | sinumerik_pcu_base_win7_software_ipc | <= 12.01 | — |
| uvnc | ultravnc | < 1.2.2.3 | 1.2.2.3 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
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CISA ICS
Siemens SIMATIC UltraVNC HMI WinCC Products
cisa_ics·2021-05-11·CVSS 7.5
[HIGH] Siemens SIMATIC UltraVNC HMI WinCC Products
## Archived Content In an effort to keep CISA.gov current, the archive contains outdated information that may not reflect current policy or programs.
ICS Advisory
##
Siemens SIMATIC UltraVNC HMI WinCC Products
Last RevisedMay 11, 2021
Alert CodeICSA-21-131-11
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SIMATIC HMIs/WinCC Products
- Vulnerabilities: Improper Initialization, Out-of-bounds Read, Heap-based Buffer Overflow, Stack-based Buffer Overflow, Access of Memory Location After End of Buffer, Improper Null Termination
## 2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow remote code execution, information disclosure, and deni
CISA ICS
Siemens SINAMICS Medium Voltage Products Remote Access (Update B)
cisa_ics·2021-05-11·CVSS 7.5
[HIGH] Siemens SINAMICS Medium Voltage Products Remote Access (Update B)
## Archived Content In an effort to keep CISA.gov current, the archive contains outdated information that may not reflect current policy or programs.
ICS Advisory
##
Siemens SINAMICS Medium Voltage Products Remote Access (Update B)
Last RevisedAugust 10, 2021
Alert CodeICSA-21-131-04
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely
- Vendor: Siemens
- Equipment: SINAMICS Medium Voltage Products, Remote Access
- Vulnerabilities: Improper Restriction of Operations Within the Bounds of a Memory Buffer, Access of Memory Location After End of Buffer, Uncontrolled Resource Consumption, Improper Initialization, Out-of-Bound Read, Heap-based Buffer Overflow, Stack-based Buffer Overflow, Improper Null Termination
## 2. UPD
CISA ICS
Siemens SINUMERIK
cisa_ics·2020-06-12·CVSS 9.8
[CRITICAL] Siemens SINUMERIK
## Archived Content In an effort to keep CISA.gov current, the archive contains outdated information that may not reflect current policy or programs.
ICS Advisory
##
Siemens SINUMERIK
Last RevisedJune 12, 2020
Alert CodeICSA-20-161-06
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low skill level to exploit
- Vendor: Siemens
- Equipment: SINUMERIK
- Vulnerabilities: Buffer Underflow, Heap-based Buffer Overflow, Improper Initialization, Out-of-bounds Read, Stack-based Buffer Overflow, Access of Memory Location After End of Buffer, Off-by-one Error, Improper Null Termination, Improper Initialization
## 2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow remote code execution, informati
GHSA
GHSA-3ccg-xj7w-w764: UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of servic
ghsa_unreviewed·2022-05-13
CVE-2019-8263 [MEDIUM] CWE-787 GHSA-3ccg-xj7w-w764: UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of servic
UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of service (DoS) condition. This attack appear to be exploitable via network connectivity. User interaction is required to trigger this vulnerability. This vulnerability has been fixed in revision 1206.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdfhttps://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-009-ultravnc-access-of-memory-location-after-end-of-buffer/https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-010-ultravnc-stack-based-buffer-overflow/https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11https://www.us-cert.gov/ics/advisories/icsa-20-161-06https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdfhttps://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-009-ultravnc-access-of-memory-location-after-end-of-buffer/https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-010-ultravnc-stack-based-buffer-overflow/https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11https://www.us-cert.gov/ics/advisories/icsa-20-161-06
2019-03-05
Published