Amazon Linux 2 Security Advisory: ALAS-2018-1012
Advisory Release Date: 2018-05-10 17:21 Pacific
Advisory Updated Date: 2018-05-10 23:57 Pacific
Severity:
Medium
Issue Overview:
Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c
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.(CVE-2018-7225)
Affected Packages:
libvncserver
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update libvncserver to update your system.
New Packages:
src:
libvncserver-0.9.9-12.amzn2.src
x86_64:
libvncserver-0.9.9-12.amzn2.x86_64
libvncserver-devel-0.9.9-12.amzn2.x86_64
libvncserver-debuginfo-0.9.9-12.amzn2.x86_64