DEBIAN-CVE-2018-12393

Advisory lineage Upstream: 1 Downstream: 4
Upstream
CVE-2018-12393
Published: 28 Feb 2019, 18:29
Last modified:28 Apr 2026, 20:18

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Feb 2019, 18:29
Published
Vulnerability first disclosed
28 Apr 2026, 20:18
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • debian•firefox-esr

    < 60.3.0esr-1 | < 60.3.0esr-1 | < 60.3.0esr-1 | < 60.3.0esr-1

  • debian•thunderbird

    < 1:60.3.0-1 | < 1:60.3.0-1 | < 1:60.3.0-1 | < 1:60.3.0-1

References (1)