Vulnerability Monitor

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CVE-2019-8271

UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer handler, which can potentially result code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.

Published

2019-03-08T23:29:00.717

Last Modified

2024-11-21T04:49:37.297

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-122
Type: Primary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	uvnc	ultravnc	< 1.2.2.3	Yes
Application	siemens	sinumerik_access_mymachine\/p2p	< 4.8	Yes
Application	siemens	sinumerik_pcu_base_win10_software\/ipc	< 14.00	Yes
Application	siemens	sinumerik_pcu_base_win7_software\/ipc	≤ 12.01	Yes

References

https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf Third Party Advisory ([email protected])
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-018-ultravnc-heap-based-buffer-overflow/ Third Party Advisory ([email protected])
https://www.us-cert.gov/ics/advisories/icsa-20-161-06 Third Party Advisory, US Government Resource ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-018-ultravnc-heap-based-buffer-overflow/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.us-cert.gov/ics/advisories/icsa-20-161-06 Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)