Low: libvncserver

2023-07-2017:29:00

alas.aws.amazon.com

memory leak

rfbclientcleanup

update

amazon linux 2

cve-2020-29260

libvncserver

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

30.2%

JSON

Issue Overview:

libvncclient v0.9.13 was discovered to contain a memory leak via the function rfbClientCleanup(). (CVE-2020-29260)

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:

aarch64:  
    libvncserver-0.9.9-14.amzn2.0.1.aarch64  
    libvncserver-devel-0.9.9-14.amzn2.0.1.aarch64  
    libvncserver-debuginfo-0.9.9-14.amzn2.0.1.aarch64  
  
i686:  
    libvncserver-0.9.9-14.amzn2.0.1.i686  
    libvncserver-devel-0.9.9-14.amzn2.0.1.i686  
    libvncserver-debuginfo-0.9.9-14.amzn2.0.1.i686  
  
src:  
    libvncserver-0.9.9-14.amzn2.0.1.src  
  
x86_64:  
    libvncserver-0.9.9-14.amzn2.0.1.x86_64  
    libvncserver-devel-0.9.9-14.amzn2.0.1.x86_64  
    libvncserver-debuginfo-0.9.9-14.amzn2.0.1.x86_64

Additional References

Red Hat: CVE-2020-29260

Mitre: CVE-2020-29260

OSVersionArchitecturePackageVersionFilename
Amazon Linux2aarch64libvncserver< 0.9.9-14.amzn2.0.1libvncserver-0.9.9-14.amzn2.0.1.aarch64.rpm
Amazon Linux2aarch64libvncserver-devel< 0.9.9-14.amzn2.0.1libvncserver-devel-0.9.9-14.amzn2.0.1.aarch64.rpm
Amazon Linux2aarch64libvncserver-debuginfo< 0.9.9-14.amzn2.0.1libvncserver-debuginfo-0.9.9-14.amzn2.0.1.aarch64.rpm
Amazon Linux2i686libvncserver< 0.9.9-14.amzn2.0.1libvncserver-0.9.9-14.amzn2.0.1.i686.rpm
Amazon Linux2i686libvncserver-devel< 0.9.9-14.amzn2.0.1libvncserver-devel-0.9.9-14.amzn2.0.1.i686.rpm
Amazon Linux2i686libvncserver-debuginfo< 0.9.9-14.amzn2.0.1libvncserver-debuginfo-0.9.9-14.amzn2.0.1.i686.rpm
Amazon Linux2x86_64libvncserver< 0.9.9-14.amzn2.0.1libvncserver-0.9.9-14.amzn2.0.1.x86_64.rpm
Amazon Linux2x86_64libvncserver-devel< 0.9.9-14.amzn2.0.1libvncserver-devel-0.9.9-14.amzn2.0.1.x86_64.rpm
Amazon Linux2x86_64libvncserver-debuginfo< 0.9.9-14.amzn2.0.1libvncserver-debuginfo-0.9.9-14.amzn2.0.1.x86_64.rpm

OS	Version	Architecture	Package	Version	Filename
Amazon Linux	2	aarch64	libvncserver	< 0.9.9-14.amzn2.0.1	libvncserver-0.9.9-14.amzn2.0.1.aarch64.rpm
Amazon Linux	2	aarch64	libvncserver-devel	< 0.9.9-14.amzn2.0.1	libvncserver-devel-0.9.9-14.amzn2.0.1.aarch64.rpm
Amazon Linux	2	aarch64	libvncserver-debuginfo	< 0.9.9-14.amzn2.0.1	libvncserver-debuginfo-0.9.9-14.amzn2.0.1.aarch64.rpm
Amazon Linux	2	i686	libvncserver	< 0.9.9-14.amzn2.0.1	libvncserver-0.9.9-14.amzn2.0.1.i686.rpm
Amazon Linux	2	i686	libvncserver-devel	< 0.9.9-14.amzn2.0.1	libvncserver-devel-0.9.9-14.amzn2.0.1.i686.rpm
Amazon Linux	2	i686	libvncserver-debuginfo	< 0.9.9-14.amzn2.0.1	libvncserver-debuginfo-0.9.9-14.amzn2.0.1.i686.rpm
Amazon Linux	2	x86_64	libvncserver	< 0.9.9-14.amzn2.0.1	libvncserver-0.9.9-14.amzn2.0.1.x86_64.rpm
Amazon Linux	2	x86_64	libvncserver-devel	< 0.9.9-14.amzn2.0.1	libvncserver-devel-0.9.9-14.amzn2.0.1.x86_64.rpm
Amazon Linux	2	x86_64	libvncserver-debuginfo	< 0.9.9-14.amzn2.0.1	libvncserver-debuginfo-0.9.9-14.amzn2.0.1.x86_64.rpm