There is a current IT security warning for Mozilla Firefox for iOS. Here you can find out which vulnerabilities are involved, which products are affected and what you can do.
The Federal Office for Security in der Informationstechnik (BSI) published a security advisory for Mozilla Firefox for iOS on July 11th, 2023. The notification lists several vulnerabilities that can be exploited by attackers. The iPhoneOS operating system and the Mozilla Firefox product are affected by the vulnerability.
The latest manufacturer recommendations regarding updates, workarounds and security patches for this vulnerability can be found here: Mozilla Firefox Security Advisory MFSA2023-25 (Stand: 10.07.2023).
Multiple vulnerabilities reported for Mozilla Firefox for iOS – Risk: medium
Risk level: 3 (medium)
CVSS Base Score: 7,1
CVSS Temporal Score: 6,2
Remote Attack: No
The Common Vulnerability Scoring System (CVSS) is used to assess the vulnerability of computer systems. The CVSS standard makes it possible to compare potential or actual security vulnerabilities based on various criteria in order to create a priority list based on this for initiating countermeasures. The attributes “none”, “low”, “medium”, “high” and “critical” are used for the severity of a vulnerability. The base score assesses the prerequisites for an attack (including authentication, complexity, privileges, user interaction) and its consequences. With the temporal score, framework conditions that change over time are included in the evaluation. The risk of the vulnerability discussed here is rated as “medium” according to the CVSS with a base score of 7.1.
Mozilla Firefox for iOS Bug: Description of the attack
Firefox is an open source web browser.
A remote, anonymous attacker can exploit multiple vulnerabilities in Mozilla Firefox for iOS to present false information or cause a denial of service condition.
The vulnerabilities were classified using the CVE reference system (Common Vulnerabilities and Exposures) based on the individual serial numbers CVE-2023-37456 and CVE-2023-37455.
Systems affected by the vulnerability at a glance
Mozilla Firefox < 115 (cpe:/a:mozilla:firefox)
General measures to deal with IT vulnerabilities
Users of the affected systems should keep them up to date. When security gaps become known, manufacturers are required to remedy them as quickly as possible by developing a patch or a workaround. If new security updates become available, install them as soon as possible. For information purposes, consult the sources listed in the next section. These often contain further information on the latest version of the software in question and the availability of security patches or tips on workarounds. If you have any further questions or are unsure, contact your responsible administrator. IT security officers should regularly check when the IT security warning affected manufacturers makes a new security update available.
Sources for updates, patches and workarounds
Here you will find further links with information about bug reports, security fixes and workarounds.
Mozilla Firefox Security Advisory MFSA2023-25 vom 2023-07-10 (11.07.2023)
For more information, see:
Version history of this security alert
This is the initial version of this IT security notice for Mozilla Firefox for iOS. As updates are announced, this text will be updated. You can understand the changes made using the following version history.
07/11/2023 – Initial version
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