# CVE-2019-15693: tigervnc: Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment...

CVE-2019-15693 is fixed in 7 products on 1 platform, first by RHSA-2020:1497, released April 16, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-15693
- Priority: High
- CVSS: 7.2 (Moderate)
- EPSS: 0.0428
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 16, 2020

## Description

Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.  Security Fix(es):  * tigervnc: Stack use-after-return due to incorrect usage of stack memory in ZRLEDecoder (CVE-2019-15691)  * tigervnc: Heap buffer overflow triggered from CopyRectDecoder due to incorrect value checks (CVE-2019-15692)  * tigervnc: Heap buffer overflow in TightDecoder::FilterGradient (CVE-2019-15693)  * tigervnc: Heap buffer overflow in DecodeManager::decodeRect (CVE-2019-15694)  * tigervnc: Stack buffer overflow in CMsgReader::readSetCursor (CVE-2019-15695)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | tigervnc RHEL 8 | 0:1.9.0-14.el8_1 | [RHSA-2020:1497](https://patchblox.com/security/data/fix/linux/rhsa-2020-1497.md) | Apr 16, 2020 |
| Linux | tigervnc ol 8 | 0:1.9.0-14.el8_1 | [ELSA-2020-1497](https://patchblox.com/security/data/fix/linux/elsa-2020-1497.md) | Apr 18, 2020 |
| Linux | tigervnc-icons RHEL 8 | 0:1.9.0-14.el8_1 | [RHSA-2020:1497](https://patchblox.com/security/data/fix/linux/rhsa-2020-1497.md) | Apr 16, 2020 |
| Linux | tigervnc-icons ol 8 | 0:1.9.0-14.el8_1 | [ELSA-2020-1497](https://patchblox.com/security/data/fix/linux/elsa-2020-1497.md) | Apr 18, 2020 |
| Linux | tigervnc-license RHEL 8 | 0:1.9.0-14.el8_1 | [RHSA-2020:1497](https://patchblox.com/security/data/fix/linux/rhsa-2020-1497.md) | Apr 16, 2020 |
| Linux | tigervnc-license ol 8 | 0:1.9.0-14.el8_1 | [ELSA-2020-1497](https://patchblox.com/security/data/fix/linux/elsa-2020-1497.md) | Apr 18, 2020 |
| Linux | tigervnc-server RHEL 8 | 0:1.9.0-14.el8_1 | [RHSA-2020:1497](https://patchblox.com/security/data/fix/linux/rhsa-2020-1497.md) | Apr 16, 2020 |
| Linux | tigervnc-server ol 8 | 0:1.9.0-14.el8_1 | [ELSA-2020-1497](https://patchblox.com/security/data/fix/linux/elsa-2020-1497.md) | Apr 18, 2020 |
| Linux | tigervnc-server-applet RHEL 8 | 0:1.9.0-14.el8_1 | [RHSA-2020:1497](https://patchblox.com/security/data/fix/linux/rhsa-2020-1497.md) | Apr 16, 2020 |
| Linux | tigervnc-server-applet ol 8 | 0:1.9.0-14.el8_1 | [ELSA-2020-1497](https://patchblox.com/security/data/fix/linux/elsa-2020-1497.md) | Apr 18, 2020 |
| Linux | tigervnc-server-minimal RHEL 8 | 0:1.9.0-14.el8_1 | [RHSA-2020:1497](https://patchblox.com/security/data/fix/linux/rhsa-2020-1497.md) | Apr 16, 2020 |
| Linux | tigervnc-server-minimal ol 8 | 0:1.9.0-14.el8_1 | [ELSA-2020-1497](https://patchblox.com/security/data/fix/linux/elsa-2020-1497.md) | Apr 18, 2020 |
| Linux | tigervnc-server-module RHEL 8 | 0:1.9.0-14.el8_1 | [RHSA-2020:1497](https://patchblox.com/security/data/fix/linux/rhsa-2020-1497.md) | Apr 16, 2020 |
| Linux | tigervnc-server-module ol 8 | 0:1.9.0-14.el8_1 | [ELSA-2020-1497](https://patchblox.com/security/data/fix/linux/elsa-2020-1497.md) | Apr 18, 2020 |

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