VulnerabilityModified
CVE-2019-20788
libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value.
CRITICAL 9.8EPSS 2.50%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.50% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190, CWE-787
- Affected
- libvnc project/libvncserver · canonical/ubuntu linux · debian/debian linux · siemens/simatic itc1500 firmware · siemens/simatic itc1500 pro firmware · siemens/simatic itc1900 firmware · siemens/simatic itc1900 pro firmware · siemens/simatic itc2200 firmware · siemens/simatic itc2200 pro firmware
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.htmlMailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfPatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fedPatch, Third Party Advisory
- https://securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclientExploit, Third Party Advisory
- https://usn.ubuntu.com/4407-1/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.htmlMailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfPatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fedPatch, Third Party Advisory
- https://securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclientExploit, Third Party Advisory
- https://usn.ubuntu.com/4407-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.