Improper Data Handling Affecting libvncserver package, versions <0:0.9.9-9.el7_0.1


Severity

Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
7.25% (94th percentile)

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  • Snyk IDSNYK-ORACLE7-LIBVNCSERVER-2487373
  • published10 Apr 2022
  • disclosed15 Dec 2014

Introduced: 15 Dec 2014

CVE-2014-6053  (opens in a new tab)
CWE-19  (opens in a new tab)

How to fix?

Upgrade Oracle:7 libvncserver to version 0:0.9.9-9.el7_0.1 or higher.
This issue was patched in ELSA-2014-1826.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvncserver package and not the libvncserver package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.

CVSS Base Scores

version 3.1