# CVE-2018-12293: gir1.2-javascriptcoregtk-4.0: The getImageData function in the ImageBufferCairo class in WebCore/platform/graphics/cairo/ImageBufferCairo.cpp in We...

CVE-2018-12293 is fixed in 7 products on 1 platform, first by gir1.2-javascriptcoregtk-4.0 2.20.3-0ubuntu0.18.04.1, released April 3, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-12293
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.1003
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 13, 2018

## Description

The getImageData function in the ImageBufferCairo class in WebCore/platform/graphics/cairo/ImageBufferCairo.cpp in WebKit, as used in WebKitGTK+ prior to version 2.20.3 and WPE WebKit prior to version 2.20.1, is vulnerable to a heap-based buffer overflow triggered by an integer overflow, which could be abused by crafted HTML content.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gir1.2-javascriptcoregtk-4.0 Ubuntu 18.04.6 LTS (bionic) | 2.20.3-0ubuntu0.18.04.1 | [gir1.2-javascriptcoregtk-4.0 2.20.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gir1.2-javascriptcoregtk-4.0-2.20.3-0ubuntu0.18.04.1.md) | Apr 3, 2019 |
| Linux | gir1.2-webkit2-4.0 Ubuntu 18.04.6 LTS (bionic) | 2.20.3-0ubuntu0.18.04.1 | [gir1.2-webkit2-4.0 2.20.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gir1.2-webkit2-4.0-2.20.3-0ubuntu0.18.04.1.md) | Apr 3, 2019 |
| Linux | libjavascriptcoregtk-4.0-18 Ubuntu 18.04.6 LTS (bionic) | 2.20.3-0ubuntu0.18.04.1 | [libjavascriptcoregtk-4.0-18 2.20.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libjavascriptcoregtk-4.0-18-2.20.3-0ubuntu0.18.04.1.md) | Apr 3, 2019 |
| Linux | libjavascriptcoregtk-4.0-bin Ubuntu 18.04.6 LTS (bionic) | 2.20.3-0ubuntu0.18.04.1 | [libjavascriptcoregtk-4.0-bin 2.20.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libjavascriptcoregtk-4.0-bin-2.20.3-0ubuntu0.18.04.1.md) | Apr 3, 2019 |
| Linux | libwebkit2gtk-4.0-37 Ubuntu 18.04.6 LTS (bionic) | 2.20.3-0ubuntu0.18.04.1 | [libwebkit2gtk-4.0-37 2.20.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwebkit2gtk-4.0-37-2.20.3-0ubuntu0.18.04.1.md) | Apr 3, 2019 |
| Linux | libwebkit2gtk-4.0-37-gtk2 Ubuntu 18.04.6 LTS (bionic) | 2.20.3-0ubuntu0.18.04.1 | [libwebkit2gtk-4.0-37-gtk2 2.20.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwebkit2gtk-4.0-37-gtk2-2.20.3-0ubuntu0.18.04.1.md) | Apr 3, 2019 |
| Linux | webkit2gtk-driver Ubuntu 18.04.6 LTS (bionic) | 2.20.3-0ubuntu0.18.04.1 | [webkit2gtk-driver 2.20.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-webkit2gtk-driver-2.20.3-0ubuntu0.18.04.1.md) | Apr 3, 2019 |

---

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