CVE-2018-7225

Publication date 19 February 2018

Last updated 11 July 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

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.

Status

Package Ubuntu Release Status
libvncserver 26.10 stonking
Fixed in 0.9.11+dfsg-1ubuntu1
26.04 LTS resolute
Fixed in 0.9.11+dfsg-1ubuntu1
25.10 questing
Fixed in 0.9.11+dfsg-1ubuntu1
25.04 plucky
Fixed in 0.9.11+dfsg-1ubuntu1
24.10 oracular
Fixed in 0.9.11+dfsg-1ubuntu1
24.04 LTS noble
Fixed in 0.9.11+dfsg-1ubuntu1
23.10 mantic
Fixed in 0.9.11+dfsg-1ubuntu1
23.04 lunar
Fixed in 0.9.11+dfsg-1ubuntu1
22.10 kinetic
Fixed in 0.9.11+dfsg-1ubuntu1
22.04 LTS jammy
Fixed in 0.9.11+dfsg-1ubuntu1
21.10 impish
Fixed in 0.9.11+dfsg-1ubuntu1
21.04 hirsute
Fixed in 0.9.11+dfsg-1ubuntu1
20.10 groovy
Fixed in 0.9.11+dfsg-1ubuntu1
20.04 LTS focal
Fixed in 0.9.11+dfsg-1ubuntu0.1
18.04 LTS bionic
Fixed in 0.9.11+dfsg-1ubuntu0.1
17.10 artful
Fixed in 0.9.11+dfsg-1ubuntu0.1
16.04 LTS xenial
Fixed in 0.9.10+dfsg-3ubuntu0.16.04.2
14.04 LTS trusty
Fixed in 0.9.9+dfsg-1ubuntu1.3
vino 26.10 stonking Not in release
26.04 LTS resolute Not in release
25.10 questing
Fixed in 3.22.0-6ubuntu1
25.04 plucky
Fixed in 3.22.0-6ubuntu1
24.10 oracular
Fixed in 3.22.0-6ubuntu1
24.04 LTS noble
Fixed in 3.22.0-6ubuntu1
23.10 mantic
Fixed in 3.22.0-6ubuntu1
23.04 lunar
Fixed in 3.22.0-6ubuntu1
22.10 kinetic
Fixed in 3.22.0-6ubuntu1
22.04 LTS jammy
Fixed in 3.22.0-6ubuntu1
21.10 impish
Fixed in 3.22.0-6ubuntu1
21.04 hirsute
Fixed in 3.22.0-6ubuntu1
20.10 groovy
Fixed in 3.22.0-6ubuntu1
20.04 LTS focal
Fixed in 3.22.0-5ubuntu2.1
18.04 LTS bionic
Fixed in 3.22.0-3ubuntu1.1
16.04 LTS xenial
Fixed in 3.8.1-0ubuntu9.3
14.04 LTS trusty Not in release
italc 26.10 stonking Not in release
26.04 LTS resolute Not in release
25.10 questing Not in release
25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Fixed in 1:3.0.3+dfsg1-3ubuntu0.1
16.04 LTS xenial
Fixed in 1:2.0.2+dfsg1-4ubuntu0.1
14.04 LTS trusty Not in release
tightvnc 26.10 stonking
Needs evaluation
26.04 LTS resolute
Needs evaluation
25.10 questing Ignored end of life, was needs-triage
25.04 plucky Ignored end of life, was needs-triage
24.10 oracular Ignored end of life, was needs-triage
24.04 LTS noble
Needs evaluation
23.10 mantic Ignored end of life, was needs-triage
23.04 lunar Ignored end of life, was needs-triage
22.10 kinetic Ignored end of life, was needs-triage
22.04 LTS jammy
Needs evaluation
21.10 impish Ignored end of life
21.04 hirsute Ignored end of life
20.10 groovy Ignored end of life
20.04 LTS focal
Needs evaluation
18.04 LTS bionic
Needs evaluation
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty
Fixed in 1.3.9-6.5+deb8u1build0.14.04.1~esm1

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libvncserver

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references

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