VULNERABILITY

Red Hat: CVE-2019-15691: CVE-2019-15691 tigervnc: Stack use-after-return due to incorrect usage of stack memory in ZRLEDecoder (Multiple Advisories)

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Red Hat: CVE-2019-15691: CVE-2019-15691 tigervnc: Stack use-after-return due to incorrect usage of stack memory in ZRLEDecoder (Multiple Advisories)

Severity
7
CVSS
(AV:N/AC:L/Au:S/C:P/I:P/A:P)
Published
12/26/2019
Created
04/21/2020
Added
04/20/2020
Modified
12/15/2023

Description

TigerVNC version prior to 1.10.1 is vulnerable to stack use-after-return, which occurs due to incorrect usage of stack memory in ZRLEDecoder. If decoding routine would throw an exception, ZRLEDecoder may try to access stack variable, which has been already freed during the process of stack unwinding. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

Solution(s)

  • redhat-upgrade-tigervnc
  • redhat-upgrade-tigervnc-debuginfo
  • redhat-upgrade-tigervnc-debugsource
  • redhat-upgrade-tigervnc-icons
  • redhat-upgrade-tigervnc-license
  • redhat-upgrade-tigervnc-server
  • redhat-upgrade-tigervnc-server-applet
  • redhat-upgrade-tigervnc-server-debuginfo
  • redhat-upgrade-tigervnc-server-minimal
  • redhat-upgrade-tigervnc-server-minimal-debuginfo
  • redhat-upgrade-tigervnc-server-module
  • redhat-upgrade-tigervnc-server-module-debuginfo

References

  • CVE-2019-15691
  • RHSA-2020:1497
  • RHSA-2020:3875

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