CVE-2019-20839

CWE-120 — Classic Buffer Overflow11 documents8 sources
Severity
7.5HIGH
EPSS
4.1%
top 11.44%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
10
Siemens Simatic Itc1500 FirmwareSiemens Simatic Itc1500 PRO FirmwareSiemens Simatic Itc1900 Firmware+7 more
Timeline
PublishedJun 17
Latest updateMay 24

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages10 packages

▶Debianlibvncserver< 0.9.13+dfsg-1+3
▶Ubuntulibvncserver< 0.9.10+dfsg-3ubuntu0.16.04.5+2
▶NVDsiemens/simatic_itc1500_firmware3.0.0.0 — 3.2.1.0
▶NVDsiemens/simatic_itc1900_firmware3.0.0.0 — 3.2.1.0

Also affects: Debian Linux 8.0, 9.0, Ubuntu Linux 14.04, 16.04, 18.04, 18.10, 20.04

Patches

Patch: cert-portal.siemens.com ↗Patch: github.com ↗Patch: cert-portal.siemens.com ↗

🔴Vulnerability Details

4
GHSA
GHSA-hff6-p675-x48v: libvncclient/sockets↗2022-05-24
▶
OSV
libvncserver vulnerabilities↗2020-07-23
▶
CVEList
CVE-2019-20839: libvncclient/sockets↗2020-06-17
▶
OSV
CVE-2019-20839: libvncclient/sockets↗2020-06-17
▶

📋Vendor Advisories

3
Ubuntu
LibVNCServer vulnerabilities↗2020-07-23
▶
Red Hat
libvncserver: buffer overflow in ConnectClientToUnixSock()↗2020-06-17
▶
Debian
CVE-2019-20839: libvncserver - libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a...↗2019
▶

💬Community

3
Bugzilla
CVE-2019-20839 libvncserver: "ConnectClientToUnixSock()" buffer overflow [fedora-all]↗2020-06-23
▶
Bugzilla
CVE-2019-20839 libvncserver: "ConnectClientToUnixSock()" buffer overflow [epel-7]↗2020-06-23
▶
Bugzilla
CVE-2019-20839 libvncserver: buffer overflow in ConnectClientToUnixSock()↗2020-06-23
▶