Earlier this week, it emerged that a section of Government Communications Headquarters (GCHQ), the UK's signal intelligence agency, had disclosed a serious vulnerability in Firefox to Mozilla. Now, GCHQ has said it helped fix nearly two dozen individual vulnerabilities in the past few months, including in highly popular pieces of software like iOS.
“So far in 2016 GCHQ/CESG has disclosed more than 20 vulnerabilities across a number of software products,” a GCHQ spokesperson told Motherboard in an email. CESG, or the National Technical Authority for Information Assurance, is the information security wing of GCHQ.
Those issues include a kernel vulnerability in OS X El Captain v10.11.4, the latest version, that would allow arbitrary code execution, and two in iOS 9.3, one of which would have done largely the same thing, and the other could have let an application launch a denial of service attack.