Bug 1549172 (CVE-2018-7226) - CVE-2018-7226 libvncserver: integer overflow in vcSetXCutTextProc in VNConsole.c
Summary: CVE-2018-7226 libvncserver: integer overflow in vcSetXCutTextProc in VNConsole.c
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-7226
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1549173 1549174
Blocks: 1546862
TreeView+ depends on / blocked
 
Reported: 2018-02-26 15:32 UTC by Laura Pardo
Modified: 2021-02-17 00:46 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-04-03 08:09:04 UTC
Embargoed:

Attachments (Terms of Use)

Description Laura Pardo 2018-02-26 15:32:26 UTC 
An issue was discovered in vcSetXCutTextProc() in VNConsole.c in LinuxVNC and VNCommand from the LibVNC/vncterm distribution through 0.9.10. Missing sanitization of the client-specified message length may cause integer overflow or possibly have unspecified other impact via a specially crafted VNC packet.


References:
https://github.com/LibVNC/vncterm/issues/6
http://openwall.com/lists/oss-security/2018/02/18/2
Comment 1 Laura Pardo 2018-02-26 15:32:58 UTC 
Created libvncserver tracking bugs for this issue:

Affects: epel-7 [bug 1549173]
Affects: fedora-all [bug 1549174]
Comment 2 Stefan Cornelius 2018-04-03 08:09:04 UTC 
vncterm is not shipped as part of our RHEL6/7 packages.
Comment 3 Stefan Cornelius 2018-04-03 08:09:14 UTC 
Statement:

This issue did not affect the versions of libvncserver as shipped with Red Hat Enterprise Linux 6 and 7.
Note You need to log in before you can comment on or make changes to this bug.