Home/CVE/libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.
CVE

CVE-2019-20839

libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.

libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.

HIGH · CVSS 7.5 EPSS 0.04134
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
▤

Affected Products & Versions

10
libvnc project libvncserver<= 0.9.12
canonical ubuntu linuxall versions
debian linuxall versions
siemens simatic itc1500 firmware>= 3.0.0.0 and < 3.2.1.0
siemens simatic itc1500 pro firmware>= 3.0.0.0 and < 3.2.1.0
siemens simatic itc1900 firmware>= 3.0.0.0 and < 3.2.1.0
siemens simatic itc1900 pro firmware>= 3.0.0.0 and < 3.2.1.0
siemens simatic itc2200 firmware>= 3.0.0.0 and < 3.2.1.0
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Jun 2020 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

10
suse-csafopenSUSE-SU-2024:10598-1
siemens-csafSSA-390195
suse-csafSUSE-SU-2020:2167-1
suse-csafopenSUSE-SU-2020:1056-1
usnUSN-4434-1
🔗

References & Sources

11
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.htmlMailing ListThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfPatchThird Party Advisory
https://github.com/LibVNC/libvncserver/commit/3fd03977c9b35800d73a865f167338cb4d05b0c1PatchThird Party Advisory
https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13Release NotesThird Party Advisory
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