CVE-2018-18498
Critical
Description
A potential vulnerability leading to an integer overflow can occur during buffer size calculations for images when a raw value is used instead of the checked value. This leads to a possible out-of-bounds write. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedFeb 28, 2019
First seenFeb 28, 2019
How to fix
Update
- mozilla firefox64.0 or later
- mozilla firefox_esr60.4 or later
- mozilla thunderbird60.4 or later
Vendor advisories
- access.redhat.com/errata/RHSA-2018:3833
- access.redhat.com/errata/RHSA-2018:3831
- debian.org/security/2019/dsa-4362
- security.gentoo.org/glsa/201903-04
- usn.ubuntu.com/3844-1/
- access.redhat.com/errata/RHSA-2019:0159
- debian.org/security/2018/dsa-4354
- usn.ubuntu.com/3868-1/
- access.redhat.com/errata/RHSA-2019:0160
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 64.0 | 64.0 |
| mozilla firefox_esr | v < 60.4 | 60.4 |
| mozilla thunderbird | v < 60.4 | 60.4 |
| 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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