CVE-2020-14405
published 2020-06-17CVE-2020-14405: An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.
PriorityP432medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
EPSS
1.85%
76.8th percentile
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | libvncserver | < libvncserver 0.9.13+dfsg-1 (bookworm) | libvncserver 0.9.13+dfsg-1 (bookworm) |
| libvnc_project | libvncserver | < 0.9.12 | 0.9.12 |
| libvncserver_project | libvncserver | >= 0 < 0.9.13+dfsg-1 | 0.9.13+dfsg-1 |
| libvncserver_project | libvncserver | >= 0 < 0.9.13+dfsg-1 | 0.9.13+dfsg-1 |
| libvncserver_project | libvncserver | >= 0 < 0.9.13+dfsg-1 | 0.9.13+dfsg-1 |
| libvncserver_project | libvncserver | >= 0 < 0.9.13+dfsg-1 | 0.9.13+dfsg-1 |
| libvncserver_project | libvncserver | >= 0 < 0.9.10+dfsg-3ubuntu0.16.04.5 | 0.9.10+dfsg-3ubuntu0.16.04.5 |
| libvncserver_project | libvncserver | >= 0 < 0.9.11+dfsg-1ubuntu1.3 | 0.9.11+dfsg-1ubuntu1.3 |
| libvncserver_project | libvncserver | >= 0 < 0.9.12+dfsg-9ubuntu0.2 | 0.9.12+dfsg-9ubuntu0.2 |
| siemens | simatic_itc1500_firmware | >= 3.0.0.0 < 3.2.1.0 | 3.2.1.0 |
| siemens | simatic_itc1500_pro_firmware | >= 3.0.0.0 < 3.2.1.0 | 3.2.1.0 |
| siemens | simatic_itc1900_firmware | >= 3.0.0.0 < 3.2.1.0 | 3.2.1.0 |
| siemens | simatic_itc1900_pro_firmware | >= 3.0.0.0 < 3.2.1.0 | 3.2.1.0 |
| siemens | simatic_itc2200_firmware | >= 3.0.0.0 < 3.2.1.0 | 3.2.1.0 |
| siemens | simatic_itc2200_pro_firmware | >= 3.0.0.0 < 3.2.1.0 | 3.2.1.0 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:N/I:N/A:P
osv7.5HIGH
vendor_ubuntu7.5HIGH
vendor_debian6.5MEDIUM
vendor_redhat6.5MEDIUM
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GHSA
GHSA-vmf9-q8q4-wg87: An issue was discovered in LibVNCServer before 0
ghsa_unreviewed·2022-05-24
CVE-2020-14405 [HIGH] CWE-770 GHSA-vmf9-q8q4-wg87: An issue was discovered in LibVNCServer before 0
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.
OSV
libvncserver vulnerabilities
osv·2020-07-23·CVSS 7.5
CVE-2019-20839 [HIGH] libvncserver vulnerabilities
libvncserver vulnerabilities
Ramin Farajpour Cami discovered that LibVNCServer incorrectly handled
certain malformed unix socket names. A remote attacker could exploit this
with a crafted socket name, leading to a denial of service, or possibly
execute arbitrary code. (CVE-2019-20839)
It was discovered that LibVNCServer did not properly access byte-aligned
data. A remote attacker could possibly use this issue to cause
LibVNCServer to crash, resulting in a denial of service. This issue only
affected Ubuntu 18.04 LTS and Ubuntu 16.04 LTS. (CVE-2019-20840)
Christian Beier discovered that LibVNCServer incorrectly handled anonymous
TLS connections. A remote attacker could possibly use this issue to cause
LibVNCServer to crash, resulting in a denial of service. This issue only
affected Ubuntu
OSV
CVE-2020-14405: An issue was discovered in LibVNCServer before 0
osv·2020-06-17·CVSS 6.5
CVE-2020-14405 [MEDIUM] CVE-2020-14405: An issue was discovered in LibVNCServer before 0
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.
CISA ICS
Siemens SIMATIC ITC
cisa_ics·2021-12-16·CVSS 9.8
[CRITICAL] Siemens SIMATIC ITC
## Archived Content In an effort to keep CISA.gov current, the archive contains outdated information that may not reflect current policy or programs.
ICS Advisory
##
Siemens SIMATIC ITC
Last RevisedDecember 16, 2021
Alert CodeICSA-21-350-12
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SIMATIC ITC Products
- Vulnerabilities: Using Components with Known Vulnerabilities
## 2. RISK EVALUATION
Successful exploitation of these LibVNC vulnerabilities could allow remote code execution, information disclosure, and denial-of-service attacks.
## 3. TECHNICAL DETAILS
## 3.1 AFFECTED PRODUCTS
Siemens reports these vulnerabilities affect the following SIMATIC Industri
Ubuntu
LibVNCServer vulnerabilities
vendor_ubuntu·2020-07-23·CVSS 7.5
CVE-2019-20839 [HIGH] LibVNCServer vulnerabilities
Title: LibVNCServer vulnerabilities
Summary: Several security issues were fixed in LibVNCServer.
Ramin Farajpour Cami discovered that LibVNCServer incorrectly handled
certain malformed unix socket names. A remote attacker could exploit this
with a crafted socket name, leading to a denial of service, or possibly
execute arbitrary code. (CVE-2019-20839)
It was discovered that LibVNCServer did not properly access byte-aligned
data. A remote attacker could possibly use this issue to cause
LibVNCServer to crash, resulting in a denial of service. This issue only
affected Ubuntu 18.04 LTS and Ubuntu 16.04 LTS. (CVE-2019-20840)
Christian Beier discovered that LibVNCServer incorrectly handled anonymous
TLS connections. A remote attacker could possibly use this issue to cause
LibVNCServer to cra
Red Hat
libvncserver: libvncclient/rfbproto.c does not limit TextChat size
vendor_redhat·2020-06-17·CVSS 6.5
CVE-2020-14405 [MEDIUM] CWE-20 libvncserver: libvncclient/rfbproto.c does not limit TextChat size
libvncserver: libvncclient/rfbproto.c does not limit TextChat size
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.
Package: libvncserver (Red Hat Enterprise Linux 6) - Out of support scope
Package: vino (Red Hat Enterprise Linux 6) - Not affected
Package: libvncserver (Red Hat Enterprise Linux 7) - Will not fix
Package: vino (Red Hat Enterprise Linux 7) - Not affected
Package: vino (Red Hat Enterprise Linux 8) - Not affected
Debian
CVE-2020-14405: libvncserver - An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c d...
vendor_debian·2020·CVSS 6.5
CVE-2020-14405 [MEDIUM] CVE-2020-14405: libvncserver - An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c d...
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.
Scope: local
bookworm: resolved (fixed in 0.9.13+dfsg-1)
bullseye: resolved (fixed in 0.9.13+dfsg-1)
forky: resolved (fixed in 0.9.13+dfsg-1)
sid: resolved (fixed in 0.9.13+dfsg-1)
trixie: resolved (fixed in 0.9.13+dfsg-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-14405 libvncserver: libvncclient/rfbproto.c does not limit TextChat size [epel-7]
bugzilla·2020-07-24·CVSS 6.5
CVE-2020-14405 [MEDIUM] CVE-2020-14405 libvncserver: libvncclient/rfbproto.c does not limit TextChat size [epel-7]
CVE-2020-14405 libvncserver: libvncclient/rfbproto.c does not limit TextChat size [epel-7]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-7.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the following template to
Bugzilla
CVE-2020-14405 libvncserver: libvncclient/rfbproto.c does not limit TextChat size [fedora-all]
bugzilla·2020-07-24·CVSS 6.5
CVE-2020-14405 [MEDIUM] CVE-2020-14405 libvncserver: libvncclient/rfbproto.c does not limit TextChat size [fedora-all]
CVE-2020-14405 libvncserver: libvncclient/rfbproto.c does not limit TextChat size [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple s
Bugzilla
CVE-2020-14405 libvncserver: libvncclient/rfbproto.c does not limit TextChat size
bugzilla·2020-07-24·CVSS 6.5
CVE-2020-14405 [MEDIUM] CVE-2020-14405 libvncserver: libvncclient/rfbproto.c does not limit TextChat size
CVE-2020-14405 libvncserver: libvncclient/rfbproto.c does not limit TextChat size
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.
Upstream commit:
https://github.com/LibVNC/libvncserver/commit/8937203441ee241c4ace85da687b7d6633a12365
Discussion:
Created libvncserver tracking bugs for this issue:
Affects: epel-7 [bug 1860326]
Affects: fedora-all [bug 1860327]
---
Flaw Summary:
When receiving a remote framebuffer (RFB) textchat message, in HandleRFBServerMessage() of libvncclient/rfbproto.c, the routine does not validate the length of the message. The length of the message is immediately used in a call to malloc(). This could result in a memory allocation which is too large and could crash the vnc client, causing a tempora
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfhttps://github.com/LibVNC/libvncserver/commit/8937203441ee241c4ace85da687b7d6633a12365https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13https://lists.debian.org/debian-lts-announce/2020/06/msg00035.htmlhttps://lists.debian.org/debian-lts-announce/2020/08/msg00045.htmlhttps://usn.ubuntu.com/4434-1/https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfhttps://github.com/LibVNC/libvncserver/commit/8937203441ee241c4ace85da687b7d6633a12365https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13https://lists.debian.org/debian-lts-announce/2020/06/msg00035.htmlhttps://lists.debian.org/debian-lts-announce/2020/08/msg00045.htmlhttps://usn.ubuntu.com/4434-1/
2020-06-17
Published