# CVE-2023-25746: Mozilla Thunderbird and 1 other: Out-of-bounds Write

CVE-2023-25746 is fixed in 10 products on 2 platforms, first by thunderbird 1:102.8.0+build2-0ubuntu0.18.04.1, released February 19, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-25746
- Priority: High
- CVSS: 8.8 (Important)
- EPSS: 0.0067
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 14, 2023
- Weakness: CWE-787: Out-of-bounds Write
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-25746

## Description

Memory safety bugs present in Firefox ESR 102.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 102.8 and Firefox ESR < 102.8.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Mozilla Thunderbird (en-US) | 115.8.0 | [Mozilla Thunderbird (en-US) 115.8.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird-115.8.0.md) | Feb 21, 2024 |
| Linux | firefox RHEL 8 | 0:102.8.0-2.el8_7 | [RHSA-2023:0808](https://patchblox.com/security/data/fix/linux/rhsa-2023-0808.md) | Feb 20, 2023 |
| Linux | firefox RHEL 9 | 0:102.8.0-2.el9_1 | [RHSA-2023:0810](https://patchblox.com/security/data/fix/linux/rhsa-2023-0810.md) | Feb 20, 2023 |
| Linux | firefox almalinux 8 | 102.8.0-2.el8_7.alma | [ALSA-2023:0808](https://patchblox.com/security/data/fix/linux/alsa-2023-0808.md) | Feb 20, 2023 |
| Linux | firefox almalinux 9 | 102.8.0-2.el9_1.alma | [ALSA-2023:0810](https://patchblox.com/security/data/fix/linux/alsa-2023-0810.md) | Feb 20, 2023 |
| Linux | firefox ol 8 | 0:102.8.0-2.0.1.el8_7 | [ELSA-2023-0808](https://patchblox.com/security/data/fix/linux/elsa-2023-0808.md) | Feb 20, 2023 |
| Linux | firefox ol 9 | 0:102.8.0-2.0.1.el9_1 | [ELSA-2023-0810](https://patchblox.com/security/data/fix/linux/elsa-2023-0810.md) | Feb 20, 2023 |
| Linux | firefox rocky 8 | 0:102.8.0-2.el8_7 | [RLSA-2023:0808](https://patchblox.com/security/data/fix/linux/rlsa-2023-0808.md) | Feb 22, 2023 |
| Linux | firefox rocky 9 | 0:102.8.0-2.el9_1 | [RLSA-2023:0810](https://patchblox.com/security/data/fix/linux/rlsa-2023-0810.md) | Feb 22, 2023 |
| Linux | firefox-esr Debian 12.15 (bookworm) | 102.8.0esr-1 | [DEBIAN-CVE-2023-25746](https://patchblox.com/security/data/fix/linux/debian-cve-2023-25746.md) | Jun 2, 2023 |
| Linux | firefox-esr Debian 13.5 (trixie) | 102.8.0esr-1 | [DEBIAN-CVE-2023-25746](https://patchblox.com/security/data/fix/linux/debian-cve-2023-25746.md) | Jun 2, 2023 |
| Linux | firefox-esr Debian 14 | 102.8.0esr-1 | [DEBIAN-CVE-2023-25746](https://patchblox.com/security/data/fix/linux/debian-cve-2023-25746.md) | Jun 2, 2023 |
| Linux | firefox-x11 RHEL 9 | 0:102.8.0-2.el9_1 | [RHSA-2023:0810](https://patchblox.com/security/data/fix/linux/rhsa-2023-0810.md) | Feb 20, 2023 |
| Linux | firefox-x11 almalinux 9 | 102.8.0-2.el9_1.alma | [ALSA-2023:0810](https://patchblox.com/security/data/fix/linux/alsa-2023-0810.md) | Feb 20, 2023 |
| Linux | firefox-x11 ol 9 | 0:102.8.0-2.0.1.el9_1 | [ELSA-2023-0810](https://patchblox.com/security/data/fix/linux/elsa-2023-0810.md) | Feb 20, 2023 |
| Linux | thunderbird Debian 12.15 (bookworm) | 1:102.8.0-1 | [DEBIAN-CVE-2023-25746](https://patchblox.com/security/data/fix/linux/debian-cve-2023-25746.md) | Jun 2, 2023 |
| Linux | thunderbird Debian 13.5 (trixie) | 1:102.8.0-1 | [DEBIAN-CVE-2023-25746](https://patchblox.com/security/data/fix/linux/debian-cve-2023-25746.md) | Jun 2, 2023 |
| Linux | thunderbird Debian 14 | 1:102.8.0-1 | [DEBIAN-CVE-2023-25746](https://patchblox.com/security/data/fix/linux/debian-cve-2023-25746.md) | Jun 2, 2023 |
| Linux | thunderbird RHEL 8 | 0:102.8.0-2.el8_7 | [RHSA-2023:0821](https://patchblox.com/security/data/fix/linux/rhsa-2023-0821.md) | Feb 20, 2023 |
| Linux | thunderbird RHEL 9 | 0:102.8.0-2.el9_1 | [RHSA-2023:0824](https://patchblox.com/security/data/fix/linux/rhsa-2023-0824.md) | Feb 20, 2023 |
| Linux | thunderbird Ubuntu 18.04.6 LTS (bionic) | 1:102.8.0+build2-0ubuntu0.18.04.1 | [thunderbird 1:102.8.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-1-102.8.0-build2-0ubuntu0.18.04.1.md) | Feb 19, 2023 |
| Linux | thunderbird Ubuntu 20.04 LTS (focal) | 1:102.8.0+build2-0ubuntu0.20.04.1 | [thunderbird 1:102.8.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-1-102.8.0-build2-0ubuntu0.20.04.1.md) | Feb 19, 2023 |
| Linux | thunderbird Ubuntu 22.04.1 LTS (jammy) | 1:102.8.0+build2-0ubuntu0.22.04.1 | [thunderbird 1:102.8.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-1-102.8.0-build2-0ubuntu0.22.04.1.md) | Feb 19, 2023 |
| Linux | thunderbird almalinux 8 | 102.8.0-2.el8_7.alma | [ALSA-2023:0821](https://patchblox.com/security/data/fix/linux/alsa-2023-0821.md) | Feb 20, 2023 |
| Linux | thunderbird almalinux 9 | 102.8.0-2.el9_1.alma | [ALSA-2023:0824](https://patchblox.com/security/data/fix/linux/alsa-2023-0824.md) | Feb 20, 2023 |
| Linux | thunderbird ol 8 | 0:102.8.0-2.0.1.el8_7 | [ELSA-2023-0821](https://patchblox.com/security/data/fix/linux/elsa-2023-0821.md) | Feb 20, 2023 |
| Linux | thunderbird ol 9 | 0:102.8.0-2.0.1.el9_1 | [ELSA-2023-0824](https://patchblox.com/security/data/fix/linux/elsa-2023-0824.md) | Feb 20, 2023 |
| Linux | thunderbird rocky 8 | 0:102.8.0-2.el8_7 | [RLSA-2023:0821](https://patchblox.com/security/data/fix/linux/rlsa-2023-0821.md) | Feb 22, 2023 |
| Linux | thunderbird rocky 9 | 0:102.8.0-2.el9_1 | [RLSA-2023:0824](https://patchblox.com/security/data/fix/linux/rlsa-2023-0824.md) | Feb 22, 2023 |
| Linux | thunderbird-gnome-support Ubuntu 18.04.6 LTS (bionic) | 1:102.8.0+build2-0ubuntu0.18.04.1 | [thunderbird-gnome-support 1:102.8.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-102.8.0-build2-0ubuntu0.18.04.1.md) | Feb 19, 2023 |
| Linux | thunderbird-gnome-support Ubuntu 20.04 LTS (focal) | 1:102.8.0+build2-0ubuntu0.20.04.1 | [thunderbird-gnome-support 1:102.8.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-102.8.0-build2-0ubuntu0.20.04.1.md) | Feb 19, 2023 |
| Linux | thunderbird-gnome-support Ubuntu 22.04.1 LTS (jammy) | 1:102.8.0+build2-0ubuntu0.22.04.1 | [thunderbird-gnome-support 1:102.8.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-gnome-support-1-102.8.0-build2-0ubuntu0.22.04.1.md) | Feb 19, 2023 |
| Linux | thunderbird-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 1:102.8.0+build2-0ubuntu0.18.04.1 | [thunderbird-mozsymbols 1:102.8.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-102.8.0-build2-0ubuntu0.18.04.1.md) | Feb 19, 2023 |
| Linux | thunderbird-mozsymbols Ubuntu 20.04 LTS (focal) | 1:102.8.0+build2-0ubuntu0.20.04.1 | [thunderbird-mozsymbols 1:102.8.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-102.8.0-build2-0ubuntu0.20.04.1.md) | Feb 19, 2023 |
| Linux | thunderbird-mozsymbols Ubuntu 22.04.1 LTS (jammy) | 1:102.8.0+build2-0ubuntu0.22.04.1 | [thunderbird-mozsymbols 1:102.8.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-mozsymbols-1-102.8.0-build2-0ubuntu0.22.04.1.md) | Feb 19, 2023 |
| Linux | xul-ext-calendar-timezones Ubuntu 18.04.6 LTS (bionic) | 1:102.8.0+build2-0ubuntu0.18.04.1 | [xul-ext-calendar-timezones 1:102.8.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-102.8.0-build2-0ubuntu0.18.04.1.md) | Feb 19, 2023 |
| Linux | xul-ext-calendar-timezones Ubuntu 20.04 LTS (focal) | 1:102.8.0+build2-0ubuntu0.20.04.1 | [xul-ext-calendar-timezones 1:102.8.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-102.8.0-build2-0ubuntu0.20.04.1.md) | Feb 19, 2023 |
| Linux | xul-ext-calendar-timezones Ubuntu 22.04.1 LTS (jammy) | 1:102.8.0+build2-0ubuntu0.22.04.1 | [xul-ext-calendar-timezones 1:102.8.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-calendar-timezones-1-102.8.0-build2-0ubuntu0.22.04.1.md) | Feb 19, 2023 |
| Linux | xul-ext-gdata-provider Ubuntu 18.04.6 LTS (bionic) | 1:102.8.0+build2-0ubuntu0.18.04.1 | [xul-ext-gdata-provider 1:102.8.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-102.8.0-build2-0ubuntu0.18.04.1.md) | Feb 19, 2023 |
| Linux | xul-ext-gdata-provider Ubuntu 20.04 LTS (focal) | 1:102.8.0+build2-0ubuntu0.20.04.1 | [xul-ext-gdata-provider 1:102.8.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-102.8.0-build2-0ubuntu0.20.04.1.md) | Feb 19, 2023 |
| Linux | xul-ext-gdata-provider Ubuntu 22.04.1 LTS (jammy) | 1:102.8.0+build2-0ubuntu0.22.04.1 | [xul-ext-gdata-provider 1:102.8.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-gdata-provider-1-102.8.0-build2-0ubuntu0.22.04.1.md) | Feb 19, 2023 |
| Linux | xul-ext-lightning Ubuntu 18.04.6 LTS (bionic) | 1:102.8.0+build2-0ubuntu0.18.04.1 | [xul-ext-lightning 1:102.8.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-lightning-1-102.8.0-build2-0ubuntu0.18.04.1.md) | Feb 19, 2023 |
| Linux | xul-ext-lightning Ubuntu 20.04 LTS (focal) | 1:102.8.0+build2-0ubuntu0.20.04.1 | [xul-ext-lightning 1:102.8.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-lightning-1-102.8.0-build2-0ubuntu0.20.04.1.md) | Feb 19, 2023 |
| Linux | xul-ext-lightning Ubuntu 22.04.1 LTS (jammy) | 1:102.8.0+build2-0ubuntu0.22.04.1 | [xul-ext-lightning 1:102.8.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-lightning-1-102.8.0-build2-0ubuntu0.22.04.1.md) | Feb 19, 2023 |

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