CVE-2018-12393
High
Description
A potential vulnerability was found in 32-bit builds where an integer overflow during the conversion of scripts to an internal UTF-16 representation could result in allocating a buffer too small for the conversion. This leads to a possible out-of-bounds write. *Note: 64-bit builds are not vulnerable to this issue.*. This vulnerability affects Firefox < 63, Firefox ESR < 60.3, and Thunderbird < 60.3.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Mozilla Firefox
PublishedFeb 28, 2019
First seenFeb 28, 2019
How to fix
Update
- mozilla firefox63.0 or later
- mozilla firefox_esr60.3 or later
- mozilla thunderbird60.3 or later
Vendor advisories
- debian.org/security/2018/dsa-4324
- security.gentoo.org/glsa/201811-04
- security.gentoo.org/glsa/201811-13
- debian.org/security/2018/dsa-4337
- access.redhat.com/errata/RHSA-2018:3005
- access.redhat.com/errata/RHSA-2018:3006
- usn.ubuntu.com/3801-1/
- usn.ubuntu.com/3868-1/
- access.redhat.com/errata/RHSA-2018:3532
- access.redhat.com/errata/RHSA-2018:3531
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 63.0 | 63.0 |
| mozilla firefox_esr | v < 60.3 | 60.3 |
| mozilla thunderbird | v < 60.3 | 60.3 |
| debian debian_linux | 8.0, 9.0 | — |
| canonical ubuntu_linux | 14.04, 16.04, 18.04, 18.10 | — |
| redhat enterprise_linux_desktop | 6.0, 7.0 | — |
| redhat enterprise_linux_server | 6.0, 7.0 | — |
| redhat enterprise_linux_server_aus | 7.6 | — |
| redhat enterprise_linux_server_eus | 7.6 | — |
| redhat enterprise_linux_server_tus | 7.6 | — |
| redhat enterprise_linux_workstation | 6.0, 7.0 | — |
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