CVE-2019-20840

libvncclient1: An issue was discovered in LibVNCServer before 0.9.13

CVE-2019-20840 is fixed in 3 products on 1 platform, first by libvncclient1 0.9.11+dfsg-1ubuntu1.3, released June 17, 2020. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0273
86th percentile

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/ws_decode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode.

Where it's fixed

ProductFixed inFixReleased
Linux
libvncclient1 · Ubuntu 18.04.6 LTS (bionic) 0.9.11+dfsg-1ubuntu1.3 libvncclient1 0.9.11+dfsg-1ubuntu1.3 Jun 17, 2020
libvncserver-config · Ubuntu 18.04.6 LTS (bionic) 0.9.11+dfsg-1ubuntu1.3 libvncserver-config 0.9.11+dfsg-1ubuntu1.3 Jun 17, 2020
libvncserver1 · Ubuntu 18.04.6 LTS (bionic) 0.9.11+dfsg-1ubuntu1.3 libvncserver1 0.9.11+dfsg-1ubuntu1.3 Jun 17, 2020

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