Mozilla has released an update to its Firefox browser, fixing a known security flaw in the open-source software.The bug, reported last week, relates to the way Firefox handles JavaScript code. It could be exploited by attackers to crash an unpatched browser, and in theory could also provide them with a way to trick the browser into running malicious code, Mozilla said in a security alert.The problem has to do with an error caused when Firefox handles certain unexpected “contentWindow.focus()” JavaScript code. It can be circumvented by disabling Firefox’s JavaScript handling capability.Users of the older Firefox 1.0 browsers and the Mozilla Suite 1.7 are not affected by the flaw, and Firefox 1.5 users should soon start to receive software patches under the browser’s automatic update system. Mozilla developers said last week that they had reduced the number of features in the 1.5.0.3 update in order to speed up the release of this security fix.Release notes for the 1.5.0.3 browser can be found online. -Robert McMillan, IDG News ServiceKeep checking in at our CSO Security Feed page for updated news coverage. Related content brandpost How an integrated platform approach improves OT security By Richard Springer Sep 26, 2023 5 mins Security news Teachers urged to enter schoolgirls into UK’s flagship cybersecurity contest CyberFirst Girls aims to introduce girls to cybersecurity, increase diversity, and address the much-maligned skills shortage in the sector. By Michael Hill Sep 26, 2023 4 mins Back to School Education Industry IT Training news CREST, IASME to deliver UK NCSC’s Cyber Incident Exercising scheme CIE scheme aims to help organisations find quality service providers that can advise and support them in practising cyber incident response plans. By Michael Hill Sep 26, 2023 3 mins IT Governance Frameworks Incident Response Data and Information Security news Baffle releases encryption solution to secure data for generative AI Solution uses the advanced encryption standard algorithm to encrypt sensitive data throughout the generative AI pipeline. By Michael Hill Sep 26, 2023 3 mins Encryption Generative AI Data and Information Security Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe