CVE-2018-7225
published 2018-02-19CVE-2018-7225: An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to…
PriorityP352critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
EPSS
6.11%
93.4th percentile
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
Affected
30 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| david_king | vino | >= 0 < 3.22.0-6 | 3.22.0-6 |
| david_king | vino | >= 0 < 3.22.0-6 | 3.22.0-6 |
| david_king | vino | >= 0 < 3.8.1-0ubuntu9.3 | 3.8.1-0ubuntu9.3 |
| david_king | vino | >= 0 < 3.22.0-3ubuntu1.1 | 3.22.0-3ubuntu1.1 |
| david_king | vino | >= 0 < 3.22.0-5ubuntu2.1 | 3.22.0-5ubuntu2.1 |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | libvncserver | < libvncserver 0.9.11+dfsg-1.1 (bookworm) | libvncserver 0.9.11+dfsg-1.1 (bookworm) |
| debian | tightvnc | < libvncserver 0.9.11+dfsg-1.1 (bookworm) | libvncserver 0.9.11+dfsg-1.1 (bookworm) |
| debian | vino | < libvncserver 0.9.11+dfsg-1.1 (bookworm) | libvncserver 0.9.11+dfsg-1.1 (bookworm) |
| libvncserver_project | libvncserver | <= 0.9.11 | — |
| libvncserver_project | libvncserver | >= 0 < 0.9.11+dfsg-1.1 | 0.9.11+dfsg-1.1 |
| libvncserver_project | libvncserver | >= 0 < 0.9.11+dfsg-1.1 | 0.9.11+dfsg-1.1 |
| libvncserver_project | libvncserver | >= 0 < 0.9.11+dfsg-1.1 | 0.9.11+dfsg-1.1 |
| libvncserver_project | libvncserver | >= 0 < 0.9.11+dfsg-1.1 | 0.9.11+dfsg-1.1 |
| redhat | enterprise_linux_desktop | — | — |
| redhat | enterprise_linux_server | — | — |
| redhat | enterprise_linux_server_aus | — | — |
| redhat | enterprise_linux_server_eus | — | — |
| redhat | enterprise_linux_server_eus | — | — |
| redhat | enterprise_linux_server_tus | — | — |
CVSS provenance
nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv9.8CRITICAL
vendor_debian9.8CRITICAL
vendor_redhat9.8CRITICAL
vendor_ubuntu9.8CRITICAL
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GHSA
GHSA-2v5x-9xhg-52hm: An issue was discovered in LibVNCServer through 0
ghsa_unreviewed·2022-05-13
CVE-2018-7225 [CRITICAL] CWE-190 GHSA-2v5x-9xhg-52hm: An issue was discovered in LibVNCServer through 0
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
OSV
italc vulnerabilities
osv·2020-10-20·CVSS 7.5
CVE-2014-6051 [HIGH] italc vulnerabilities
italc vulnerabilities
Nicolas Ruff discovered that iTALC had buffer overflows, divide-by-zero errors
and didn't check malloc return values. A remote attacker could use these issues
to cause a denial of service or possibly execute arbitrary code.
(CVE-2014-6051, CVE-2014-6052, CVE-2014-6053, CVE-2014-6054, CVE-2014-6055)
Josef Gajdusek discovered that iTALC had heap-based buffer overflow
vulnerabilities. A remote attacker could used these issues to cause a denial of
service or possibly execute arbitrary code. (CVE-2016-9941, CVE-2016-9942)
It was discovered that iTALC had an out-of-bounds write, multiple heap
out-of-bounds writes, an infinite loop, improper initializations, and null
pointer vulnerabilities. A remote attacker could used these issues to cause a
denial of service or possibl
OSV
vino vulnerabilities
osv·2020-10-07·CVSS 5.0
CVE-2014-6053 [MEDIUM] vino vulnerabilities
vino vulnerabilities
Nicolas Ruff discovered that Vino incorrectly handled large ClientCutText
messages. A remote attacker could use this issue to cause the server to
crash, resulting in a denial of service. (CVE-2014-6053)
It was discovered that Vino incorrectly handled certain packet lengths. A
remote attacker could possibly use this issue to obtain sensitive
information, cause a denial of service, or execute arbitrary code.
(CVE-2018-7225)
Pavel Cheremushkin discovered that an information disclosure vulnerability
existed in Vino when sending a ServerCutText message. An attacker could
possibly use this issue to expose sensitive information. (CVE-2019-15681)
It was discovered that Vino incorrectly handled region clipping. A remote
attacker could possibly use this issue to cause Vino t
OSV
italc vulnerabilities
osv·2020-09-28·CVSS 9.8
CVE-2019-15681 [CRITICAL] italc vulnerabilities
italc vulnerabilities
It was discovered that an information disclosure vulnerability existed in the
LibVNCServer vendored in iTALC when sending a ServerCutText message. An
attacker could possibly use this issue to expose sensitive information.
(CVE-2019-15681)
It was discovered that the LibVNCServer and LibVNCClient vendored in iTALC
incorrectly handled certain packet lengths. A remote attacker could possibly
use this issue to obtain sensitive information, cause a denial of service, or
execute arbitrary code.
(CVE-2018-15127 CVE-2018-20019, CVE-2018-20020, CVE-2018-20021, CVE-2018-20022,
CVE-2018-20023, CVE-2018-20024, CVE-2018-20748, CVE-2018-20749, CVE-2018-20750,
CVE-2018-7225, CVE-2019-15681)
OSV
CVE-2018-7225: An issue was discovered in LibVNCServer through 0
osv·2018-02-19·CVSS 9.8
CVE-2018-7225 [CRITICAL] CVE-2018-7225: An issue was discovered in LibVNCServer through 0
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
Ubuntu
iTALC vulnerabilities
vendor_ubuntu·2020-10-20·CVSS 7.5
CVE-2018-20749 [HIGH] iTALC vulnerabilities
Title: iTALC vulnerabilities
Summary: Several security issues were fixed in iTALC.
Nicolas Ruff discovered that iTALC had buffer overflows, divide-by-zero errors
and didn't check malloc return values. A remote attacker could use these issues
to cause a denial of service or possibly execute arbitrary code.
(CVE-2014-6051, CVE-2014-6052, CVE-2014-6053, CVE-2014-6054, CVE-2014-6055)
Josef Gajdusek discovered that iTALC had heap-based buffer overflow
vulnerabilities. A remote attacker could used these issues to cause a denial of
service or possibly execute arbitrary code. (CVE-2016-9941, CVE-2016-9942)
It was discovered that iTALC had an out-of-bounds write, multiple heap
out-of-bounds writes, an infinite loop, improper initializations, and null
pointer vulnerabilities. A remote attacker c
Ubuntu
Vino vulnerabilities
vendor_ubuntu·2020-10-07·CVSS 5.0
CVE-2014-6053 [MEDIUM] Vino vulnerabilities
Title: Vino vulnerabilities
Summary: Several security issues were fixed in Vino.
Nicolas Ruff discovered that Vino incorrectly handled large ClientCutText
messages. A remote attacker could use this issue to cause the server to
crash, resulting in a denial of service. (CVE-2014-6053)
It was discovered that Vino incorrectly handled certain packet lengths. A
remote attacker could possibly use this issue to obtain sensitive
information, cause a denial of service, or execute arbitrary code.
(CVE-2018-7225)
Pavel Cheremushkin discovered that an information disclosure vulnerability
existed in Vino when sending a ServerCutText message. An attacker could
possibly use this issue to expose sensitive information. (CVE-2019-15681)
It was discovered that Vino incorrectly handled region clipping. A
Ubuntu
iTALC vulnerabilities
vendor_ubuntu·2020-09-28·CVSS 9.8
CVE-2018-15127 [CRITICAL] iTALC vulnerabilities
Title: iTALC vulnerabilities
Summary: Several security issues were fixed in iTALC.
It was discovered that an information disclosure vulnerability existed in the
LibVNCServer vendored in iTALC when sending a ServerCutText message. An
attacker could possibly use this issue to expose sensitive information.
(CVE-2019-15681)
It was discovered that the LibVNCServer and LibVNCClient vendored in iTALC
incorrectly handled certain packet lengths. A remote attacker could possibly
use this issue to obtain sensitive information, cause a denial of service, or
execute arbitrary code.
(CVE-2018-15127 CVE-2018-20019, CVE-2018-20020, CVE-2018-20021, CVE-2018-20022,
CVE-2018-20023, CVE-2018-20024, CVE-2018-20748, CVE-2018-20749, CVE-2018-20750,
CVE-2018-7225, CVE-2019-15681)
Instructions: In general, a s
Ubuntu
LibVNCServer vulnerability
vendor_ubuntu·2018-04-04
CVE-2018-7225 LibVNCServer vulnerability
Title: LibVNCServer vulnerability
Summary: LibVNCServer could be made to crash, expose sensitive information, or run
programs if it received specially crafted network traffic.
It was discovered that LibVNCServer incorrectly handled certain packet
lengths. A remote attacker able to connect to a LibVNCServer could possibly
use this issue to obtain sensitive information, cause a denial of service,
or execute arbitrary code.
Instructions: After a standard system update you need to restart LibVNCServer
applications to make all the necessary changes.
Red Hat
libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c
vendor_redhat·2018-02-18·CVSS 9.8
CVE-2018-7225 [CRITICAL] CWE-805 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c
libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
Package: libvncserver (Red Hat Enterprise Linux 6) - Will not fix
Debian
CVE-2018-7225: libvncserver - An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMe...
vendor_debian·2018·CVSS 9.8
CVE-2018-7225 [CRITICAL] CVE-2018-7225: libvncserver - An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMe...
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
Scope: local
bookworm: resolved (fixed in 0.9.11+dfsg-1.1)
bullseye: resolved (fixed in 0.9.11+dfsg-1.1)
forky: resolved (fixed in 0.9.11+dfsg-1.1)
sid: resolved (fixed in 0.9.11+dfsg-1.1)
trixie: resolved (fixed in 0.9.11+dfsg-1.1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c [epel-7]
bugzilla·2018-02-19·CVSS 9.8
CVE-2018-7225 [CRITICAL] CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c [epel-7]
CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c [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
Bugzilla
CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c
bugzilla·2018-02-19·CVSS 9.8
CVE-2018-7225 [CRITICAL] CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c
CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
References:
https://github.com/LibVNC/libvncserver/issues/218
http://www.openwall.com/lists/oss-security/2018/02/18/1
Discussion:
Created libvncserver tracking bugs for this issue:
Affects: epel-7 [bug 1546859]
Affects: fedora-all [bug 1546860]
---
Created attachment 1400842
Proposed fix
This prevents from the integer overflow.
However, it does not impose any length limit to preve
Bugzilla
CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c [fedora-all]
bugzilla·2018-02-19·CVSS 9.8
CVE-2018-7225 [CRITICAL] CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c [fedora-all]
CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c [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 is
http://www.openwall.com/lists/oss-security/2018/02/18/1http://www.securityfocus.com/bid/103107https://access.redhat.com/errata/RHSA-2018:1055https://github.com/LibVNC/libvncserver/issues/218https://lists.debian.org/debian-lts-announce/2018/03/msg00035.htmlhttps://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlhttps://lists.debian.org/debian-lts-announce/2019/11/msg00032.htmlhttps://lists.debian.org/debian-lts-announce/2019/12/msg00028.htmlhttps://security.gentoo.org/glsa/201908-05https://usn.ubuntu.com/3618-1/https://usn.ubuntu.com/4547-1/https://usn.ubuntu.com/4573-1/https://usn.ubuntu.com/4587-1/https://www.debian.org/security/2018/dsa-4221http://www.openwall.com/lists/oss-security/2018/02/18/1http://www.securityfocus.com/bid/103107https://access.redhat.com/errata/RHSA-2018:1055https://github.com/LibVNC/libvncserver/issues/218https://lists.debian.org/debian-lts-announce/2018/03/msg00035.htmlhttps://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlhttps://lists.debian.org/debian-lts-announce/2019/11/msg00032.htmlhttps://lists.debian.org/debian-lts-announce/2019/12/msg00028.htmlhttps://security.gentoo.org/glsa/201908-05https://usn.ubuntu.com/3618-1/https://usn.ubuntu.com/4547-1/https://usn.ubuntu.com/4573-1/https://usn.ubuntu.com/4587-1/https://www.debian.org/security/2018/dsa-4221
2018-02-19
Published