CVE-2018-12383

Public Exploit

Description

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory gentoo.org Vendor Advisory gentoo.org Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Firefox ESR
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://security.gentoo.org/glsa/201810-01 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html third party advisory mailing list
https://security.gentoo.org/glsa/201811-13 third party advisory vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1475775 vendor advisory issue tracking exploit
https://www.debian.org/security/2018/dsa-4327 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-23/ vendor advisory
https://access.redhat.com/errata/RHSA-2018:2835 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:3403 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-20/ vendor advisory
http://www.securitytracker.com/id/1041610 third party advisory vdb entry
http://www.securityfocus.com/bid/105276 third party advisory vdb entry
http://www.securitytracker.com/id/1041701 third party advisory vdb entry
https://access.redhat.com/errata/RHSA-2018:3458 third party advisory vendor advisory
https://www.debian.org/security/2018/dsa-4304 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:2834 third party advisory vendor advisory
https://usn.ubuntu.com/3793-1/ third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-25/ vendor advisory
https://usn.ubuntu.com/3761-1/ third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-12383?
CVE-2018-12383 has been scored as a medium severity vulnerability.
How to fix CVE-2018-12383?
To fix CVE-2018-12383, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12383 being actively exploited in the wild?
It is possible that CVE-2018-12383 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-12383?
CVE-2018-12383 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird.
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