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Mozilla Foundation Security Advisory 2020-09

Security Vulnerabilities fixed in Firefox ESR 68.6

Announced
March 10, 2020
Impact
high
Products
Firefox ESR
Fixed in
  • Firefox ESR 68.6

#CVE-2020-6805: Use-after-free when removing data about origins

Reporter
Brian Carpenter
Impact
high
Description

When removing data about an origin whose tab was recently closed, a use-after-free could occur in the Quota manager, resulting in a potentially exploitable crash.

References

#CVE-2020-6806: BodyStream::OnInputStreamReady was missing protections against state confusion

Reporter
Sergei Glazunov of Google Project Zero
Impact
high
Description

By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash.

References

#CVE-2020-6807: Use-after-free in cubeb during stream destruction

Reporter
C.M.Chang
Impact
high
Description

When a device was changed while a stream was about to be destroyed, the stream-reinit task may have been executed after the stream was destroyed, causing a use-after-free and a potentially exploitable crash.

References

#CVE-2020-6811: Devtools' 'Copy as cURL' feature did not fully escape website-controlled data, potentially leading to command injection

Reporter
Ophir LOJKINE
Impact
moderate
Description

The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP method of a request, which can be controlled by the website. If a user used the 'Copy as Curl' feature and pasted the command into a terminal, it could have resulted in command injection and arbitrary command execution.

References

#CVE-2019-20503: Out of bounds reads in sctp_load_addresses_from_init

Reporter
Natalie Silvanovich of Google Project Zero
Impact
moderate
Description

The inputs to sctp_load_addresses_from_init are verified by sctp_arethere_unrecognized_parameters; however, the two functions handled parameter bounds differently, resulting in out of bounds reads when parameters are partially outside a chunk.

References

#CVE-2020-6812: The names of AirPods with personally identifiable information were exposed to websites with camera or microphone permission

Reporter
Jan-Ivar Bruaroey
Impact
moderate
Description

The first time AirPods are connected to an iPhone, they become named after the user's name by default (e.g. Jane Doe's AirPods.) Websites with camera or microphone permission are able to enumerate device names, disclosing the user's name. To resolve this issue, Firefox added a special case that renames devices containing the substring 'AirPods' to simply 'AirPods'.

References

#CVE-2020-6814: Memory safety bugs fixed in Firefox 74 and Firefox ESR 68.6

Reporter
Mozilla developers and community
Impact
high
Description

Mozilla developers and community members Byron Campen, Jason Kratzer, and Christian Holler reported memory safety bugs present in Firefox 73 and Firefox ESR 68.5. 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