UltraVNC UltraVNC
At a glance
- Source
- NVD
- EPSS
- EPSS 3.01 % · percentile 87 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Kaspersky
- NVD status
- Modified
Description
UltraVNC revision 1198 contains multiple memory leaks (CWE-655) in VNC client code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1199.
Weaknesses (CWE)
References
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-005-ultravnc-memory-leak/
- https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
- https://www.us-cert.gov/ics/advisories/icsa-20-161-06
- https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2019-17657
- GCVE · GCVE-0-2019-8259
CERT-FR advisories
- CERTFR-2021-AVI-357 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2020-AVI-349 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2019-AVI-384 — Multiples vulnérabilités dans les produits Schneider Electric · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*< 1.2.2.3cpe:2.3:a:siemens:sinumerik_access_mymachine\/p2p:*:*:*:*:*:*:*:*< 4.8cpe:2.3:a:siemens:sinumerik_pcu_base_win10_software\/ipc:*:*:*:*:*:*:*:*< 14.00cpe:2.3:a:siemens:sinumerik_pcu_base_win7_software\/ipc:*:*:*:*:*:*:*:*≤ 12.01
Affected products
| Product | Versions |
|---|---|
| UltraVNC · UltraVNC | affected 1.2.2.3 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |