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Mozilla Foundation Security Advisory 2020-46

Security Vulnerabilities fixed in Firefox ESR 78.4

Announced
October 20, 2020
Impact
high
Products
Firefox ESR
Fixed in
  • Firefox ESR 78.4

#CVE-2020-15969: Use-after-free in usersctp

Reporter
Mark Wodrich of Google
Impact
high
Description

A use-after-free bug in the usersctp library was reported upstream. We assume this could have led to memory corruption and a potentially exploitable crash.

References

#CVE-2020-15683: Memory safety bugs fixed in Firefox 82 and Firefox ESR 78.4

Reporter
Mozilla developers and community
Impact
high
Description

Mozilla developers and community members Jason Kratzer, Simon Giesecke, Philipp, and Christian Holler reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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.

References