Mozilla Foundation Security Advisory 2020-21
Security Vulnerabilities fixed in Firefox ESR 68.9
- Announced
- June 2, 2020
- Impact
- high
- Products
- Firefox ESR
- Fixed in
-
- Firefox ESR 68.9
#CVE-2020-12399: Timing attack on DSA signatures in NSS library
- Reporter
- Cesar Pereida Garcia and the Network and Information Security Group (NISEC) at Tampere University
- Impact
- high
Description
NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys.
References
#CVE-2020-12405: Use-after-free in SharedWorkerService
- Reporter
- Marcin 'Icewall' Noga of Cisco Talos
- Impact
- high
Description
When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash.
References
#CVE-2020-12406: JavaScript Type confusion with NativeTypes
- Reporter
- Iain Ireland
- Impact
- high
Description
Mozilla developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code.
References
#CVE-2020-12410: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9
- Reporter
- Mozilla developers
- Impact
- high
Description
Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox 76 and Firefox ESR 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.