If a user saved passwords before Firefox 58 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Firefox 58. The new master password is added only on the new file. This could allow the exposure of stored password data outside of user expectations. This vulnerability affects Firefox < 62, Firefox ESR < 60.2.1, and Thunderbird < 60.2.1.
Published 2018-10-18 13:29:06
Updated 2019-10-03 00:03:26
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2018-12383

0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 32 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-12383

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
2.1
LOW AV:L/AC:L/Au:N/C:P/I:N/A:N
3.9
2.9
NIST
5.5
MEDIUM CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
1.8
3.6
NIST

CWE ids for CVE-2018-12383

  • The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-12383

Products affected by CVE-2018-12383

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