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Mozilla Foundation Security Advisory 2018-23

Security vulnerabilities fixed in Firefox ESR 60.2.1

Announced
September 21, 2018
Impact
moderate
Products
Firefox ESR
Fixed in
  • Firefox ESR 60.2.1

#CVE-2018-12385: Crash in TransportSecurityInfo due to cached data

Reporter
Philipp
Impact
moderate
Description

A potentially exploitable crash in TransportSecurityInfo used for SSL can be triggered by data stored in the local cache in the user profile directory. This issue is only exploitable in combination with another vulnerability allowing an attacker to write data into the local cache or from locally installed malware. This issue also triggers a non-exploitable startup crash for users switching between the Nightly and Release versions of Firefox if the same profile is used.

References

#CVE-2018-12383: Setting a master password post-Firefox 58 does not delete unencrypted previously stored passwords

Reporter
Jurgen Gaeremyn
Impact
low
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.

References