CVE-2018-12383 Information disclosure in Firefox

What is CVE-2018-12383?

CVE-2018-12383 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 18 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-522

Which versions are affected by CVE-2018-12383?

It affects 11 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Redhat Enterprise Linux Desktop and 5 more.

How do I fix CVE-2018-12383?

Upgrade to a fixed version.

Is CVE-2018-12383 being exploited?

There is no known exploitation of CVE-2018-12383 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-12383, GHSA-cvcq-m8cv-7r6g, UBUNTU-CVE-2018-12383.