CVE-2018-12393

Advisory lineage Upstream: 0 Downstream: 23
Modified
Published: 28 Feb 2019, 18:00
Last modified:05 Aug 2024, 08:31

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.5 HIGH
v3.0 (nvd)
EPSS Score
2.99% LOW
3% probability -2.79%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Feb 2019, 18:00
Published
Vulnerability first disclosed
05 Aug 2024, 08:31
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
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 2.99%• Percentile: 87%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • canonical•ubuntu_linux

    14.04 | 16.04 | 18.04 | 18.10

  • debian•debian_linux

    8.0 | 9.0

  • mozilla•firefox

    < 63.0 | ≥ unspecified, < 63

  • mozilla•firefox_esr

    < 60.3 | ≥ unspecified, < 60.3

  • mozilla•thunderbird

    < 60.3 | ≥ unspecified, < 60.3

  • 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

References (19)