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Integer Overflow or Wraparound Affecting libvncserver-devel package, versions <0:0.9.9-12.el7_5

Severity

 Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
6.11% (94th percentile)

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  • Snyk IDSNYK-ORACLE7-LIBVNCSERVERDEVEL-2525229
  • published10 Apr 2022
  • disclosed19 Feb 2018
Report a new vulnerability Found a mistake?

Introduced: 19 Feb 2018

CVE-2018-7225  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Oracle:7 libvncserver-devel to version 0:0.9.9-12.el7_5 or higher.
This issue was patched in ELSA-2018-1055.

NVD Description

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

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.