Vulnerability Details : CVE-2019-8261
UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC code inside client CoRRE decoder, caused by multiplication overflow. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200.
Products affected by CVE-2019-8261
- cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-8261
1.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-8261
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2019-8261
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Primary)
- vulnerability@kaspersky.com (Secondary)
References for CVE-2019-8261
-
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
Siemens SIMATIC UltraVNC HMI WinCC Products | CISA
-
https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
-
https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
-
https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
-
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-007-ultravnc-out-of-bound-read/
KLCERT-19-007: UltraVNC Out-of-bound Read | Kaspersky Lab ICS CERTThird Party Advisory
-
https://www.us-cert.gov/ics/advisories/icsa-20-161-06
Siemens SINUMERIK | CISA
Jump to