Vulnerability Details : CVE-2019-8276
UltraVNC revision 1211 has a stack buffer overflow vulnerability in VNC server code inside file transfer request handler, which can result in Denial of Service (DoS). This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.
Vulnerability category: OverflowMemory CorruptionDenial of service
Products affected by CVE-2019-8276
- cpe:2.3:a:siemens:sinumerik_access_mymachine\/p2p:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinumerik_pcu_base_win10_software\/ipc:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinumerik_pcu_base_win7_software\/ipc:*:*:*:*:*:*:*:*
- cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-8276
0.93%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 83 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-8276
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2019-8276
-
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).Assigned by: vulnerability@kaspersky.com (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-8276
-
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-023-ultravnc-stack-based-buffer-overflow/
KLCERT-19-023: UltraVNC Stack-based Buffer Overflow | Kaspersky Lab ICS CERTThird Party Advisory
-
https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
Third Party Advisory
-
https://www.us-cert.gov/ics/advisories/icsa-20-161-06
Siemens SINUMERIK | CISAThird Party Advisory;US Government Resource
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