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Amazon Linux AMI: CVE-2019-15691: Security patch for tigervnc ((Multiple Advisories))

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Amazon Linux AMI: CVE-2019-15691: Security patch for tigervnc ((Multiple Advisories))

Severity
7
CVSS
(AV:N/AC:L/Au:S/C:P/I:P/A:P)
Published
12/26/2019
Created
12/22/2020
Added
12/19/2020
Modified
01/15/2021

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)

  • amazon-linux-upgrade-tigervnc

References

  • ALAS-2021-1470
  • CVE-2019-15691

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