CVE-2018-20748
Published: 30 January 2019
LibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities in libvncclient/rfbproto.c. The fix for CVE-2018-20019 was incomplete.
Notes
| Author | Note |
|---|---|
| mdeslaur | Further fixes for CVE-2018-20019 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
italc Launchpad, Ubuntu, Debian |
bionic |
Released
(1:3.0.3+dfsg1-3ubuntu0.1)
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| trusty |
Does not exist
(trusty was needed)
|
|
| upstream |
Released
(1:3.0.3+dfsg1-1+deb9u1, 1:2.0.2+dfsg1-2+deb8u1)
|
|
| xenial |
Released
(1:2.0.2+dfsg1-4ubuntu0.1)
|
|
| hirsute |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| impish |
Does not exist
|
|
| mantic |
Does not exist
|
|
|
libvncserver Launchpad, Ubuntu, Debian |
focal |
Not vulnerable
(0.9.11+dfsg-1.3)
|
| bionic |
Released
(0.9.11+dfsg-1ubuntu1.1)
|
|
| cosmic |
Released
(0.9.11+dfsg-1.1ubuntu0.1)
|
|
| disco |
Not vulnerable
(0.9.11+dfsg-1.3)
|
|
| groovy |
Not vulnerable
(0.9.11+dfsg-1.3)
|
|
| trusty |
Released
(0.9.9+dfsg-1ubuntu1.4)
|
|
| upstream |
Released
(0.9.11+dfsg-1.3)
|
|
| xenial |
Released
(0.9.10+dfsg-3ubuntu0.16.04.3)
|
|
| hirsute |
Not vulnerable
(0.9.11+dfsg-1.3)
|
|
| jammy |
Not vulnerable
(0.9.11+dfsg-1.3)
|
|
| kinetic |
Not vulnerable
(0.9.11+dfsg-1.3)
|
|
| lunar |
Not vulnerable
(0.9.11+dfsg-1.3)
|
|
| impish |
Not vulnerable
(0.9.11+dfsg-1.3)
|
|
| mantic |
Not vulnerable
(0.9.11+dfsg-1.3)
|
|
|
Patches: upstream: https://github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2a upstream: https://github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2c upstream: https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7 upstream: https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae |
||
|
tightvnc Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Needs triage
|
|
| groovy |
Ignored
(end of life)
|
|
| trusty |
Released
(1.3.9-6.5+deb8u1build0.14.04.1~esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(1:1.3.9-6.5+deb8u1)
|
|
| xenial |
Needs triage
|
|
| kinetic |
Ignored
(end of life, was needs-triage)
|
|
| hirsute |
Ignored
(end of life)
|
|
| jammy |
Needs triage
|
|
| impish |
Ignored
(end of life)
|
|
| lunar |
Needs triage
|
|
| mantic |
Needs triage
|
|
|
x11vnc Launchpad, Ubuntu, Debian |
focal |
Not vulnerable
(uses shared libvnc)
|
| bionic |
Not vulnerable
(uses shared libvnc)
|
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Not vulnerable
(uses shared libvnc)
|
|
| hirsute |
Not vulnerable
(uses shared libvnc)
|
|
| jammy |
Not vulnerable
(uses shared libvnc)
|
|
| kinetic |
Not vulnerable
(uses shared libvnc)
|
|
| lunar |
Not vulnerable
(uses shared libvnc)
|
|
| groovy |
Not vulnerable
(uses shared libvnc)
|
|
| impish |
Not vulnerable
(uses shared libvnc)
|
|
| trusty |
Not vulnerable
(uses shared libvnc)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(uses shared libvnc)
|
|
| mantic |
Not vulnerable
(uses shared libvnc)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |