CVE-2017-7394: Input Validation
First published: Sat Apr 01 2017(Updated: )
In TigerVNC (SSecurityPlain.cxx SSecurityPlain::processMsg), unauthenticated users can crash the server by sending long usernames. Upstream patches: <a href="https://github.com/TigerVNC/tigervnc/pull/440/commits/62197c89e98be47a174074e4c7429c57767a4929">https://github.com/TigerVNC/tigervnc/pull/440/commits/62197c89e98be47a174074e4c7429c57767a4929</a> <a href="https://github.com/TigerVNC/tigervnc/pull/440/commits/9801c5efcf8c1774d9c807ebd5d27ac7049ad993">https://github.com/TigerVNC/tigervnc/pull/440/commits/9801c5efcf8c1774d9c807ebd5d27ac7049ad993</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| TigerVNC | =1.7.1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://www.securityfocus.com/bid/97305
- https://access.redhat.com/errata/RHSA-2017:2000
- https://github.com/TigerVNC/tigervnc/pull/440
- https://security.gentoo.org/glsa/201801-13
- https://github.com/TigerVNC/tigervnc/pull/440/commits/62197c89e98be47a174074e4c7429c57767a4929
- https://github.com/TigerVNC/tigervnc/pull/440/commits/9801c5efcf8c1774d9c807ebd5d27ac7049ad993
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1438704
- https://bugzilla.redhat.com/show_bug.cgi?id=1438700
Frequently Asked Questions
What is the severity of CVE-2017-7394?
CVE-2017-7394 is classified as a medium severity vulnerability due to its potential to allow a denial of service attack.
How do I fix CVE-2017-7394?
To fix CVE-2017-7394, upgrade to the patched version of TigerVNC that addresses this vulnerability.
Which versions of TigerVNC are affected by CVE-2017-7394?
CVE-2017-7394 affects TigerVNC version 1.7.1.
What type of attack does CVE-2017-7394 enable?
CVE-2017-7394 enables unauthenticated denial of service attacks by crashing the server with long usernames.
Is user authentication required to exploit CVE-2017-7394?
No, CVE-2017-7394 can be exploited by unauthenticated users.
- agent/type
- agent/softwarecombine
- agent/first-publish-date
- agent/last-modified-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2017-7394
- agent/severity
- agent/remedy
- agent/references
- agent/author
- agent/weakness
- agent/description
- agent/event
- agent/trending
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/tigervnc
- canonical/tigervnc
- version/tigervnc/1.7.1