# CVE-2018-8784: freerdp2-shadow-x11: FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that r...

CVE-2018-8784 is fixed in 12 products on 1 platform, first by freerdp2-shadow-x11 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1, released November 28, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-8784
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0729
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 28, 2018

## Description

FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that results in a memory corruption and probably even a remote code execution.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | freerdp2-shadow-x11 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [freerdp2-shadow-x11 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-freerdp2-shadow-x11-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | freerdp2-wayland Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [freerdp2-wayland 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-freerdp2-wayland-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | freerdp2-x11 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [freerdp2-x11 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-freerdp2-x11-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | libfreerdp-client2-2 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [libfreerdp-client2-2 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libfreerdp-client2-2-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | libfreerdp-server2-2 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [libfreerdp-server2-2 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libfreerdp-server2-2-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | libfreerdp-shadow-subsystem2-2 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [libfreerdp-shadow-subsystem2-2 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libfreerdp-shadow-subsystem2-2-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | libfreerdp-shadow2-2 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [libfreerdp-shadow2-2 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libfreerdp-shadow2-2-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | libfreerdp2-2 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [libfreerdp2-2 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libfreerdp2-2-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | libuwac0-0 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [libuwac0-0 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libuwac0-0-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | libwinpr-tools2-2 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [libwinpr-tools2-2 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwinpr-tools2-2-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | libwinpr2-2 Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [libwinpr2-2 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwinpr2-2-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |
| Linux | winpr-utils Ubuntu 18.04.6 LTS (bionic) | 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1 | [winpr-utils 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-winpr-utils-2.0.0-git20170725.1.1648deb-dfsg1-7ubuntu0.1.md) | Nov 28, 2018 |

---

Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo