Mozilla

Mozilla Foundation Security Advisory 2017-07

Security vulnerabilities fixed in Thunderbird 45.8

Announced
March 7, 2017
Impact
critical
Products
Thunderbird
Fixed in
  • Thunderbird 45.8

In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.

#CVE-2017-5400: asm.js JIT-spray bypass of ASLR and DEP

Reporter
Rh0
Impact
critical
Description

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks.

References

#CVE-2017-5401: Memory Corruption when handling ErrorResult

Reporter
Anton Eliasson
Impact
critical
Description

A crash triggerable by web content in which an ErrorResult references unassigned memory due to a logic error. The resulting crash may be exploitable.

References

#CVE-2017-5402: Use-after-free working with events in FontFace objects

Reporter
Nils
Impact
critical
Description

A use-after-free can occur when events are fired for a FontFace object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash.

References

#CVE-2017-5404: Use-after-free working with ranges in selections

Reporter
Ivan Fratric of Google Project Zero
Impact
critical
Description

A use-after-free error can occur when manipulating ranges in selections with one node inside a native anonymous tree and one node outside of it. This results in a potentially exploitable crash.

References

#CVE-2017-5407: Pixel and history stealing via floating-point timing side channel with SVG filters

Reporter
David Kohlbrenner
Impact
high
Description

Using SVG filters that don't use the fixed point math implementation on a target iframe, a malicious page can extract pixel values from a targeted user. This can be used to extract history information and read text values across domains. This violates same-origin policy and leads to information disclosure.

References

#CVE-2017-5410: Memory corruption during JavaScript garbage collection incremental sweeping

Reporter
Jerri Rice
Impact
high
Description

Memory corruption resulting in a potentially exploitable crash during garbage collection of JavaScript due errors in how incremental sweeping is managed for memory cleanup.

References

#CVE-2017-5408: Cross-origin reading of video captions in violation of CORS

Reporter
Eric Lawrence of Chrome Security
Impact
moderate
Description

Video files loaded video captions cross-origin without checking for the presence of CORS headers permitting such cross-origin use, leading to potential information disclosure for video captions.

References

#CVE-2017-5405: FTP response codes can cause use of uninitialized values for ports

Reporter
Anonymous
Impact
low
Description

Certain response codes in FTP connections can result in the use of uninitialized values for ports in FTP operations.

References

#CVE-2017-5398: Memory safety bugs fixed in Thunderbird 45.8

Reporter
Mozilla developers and community
Impact
critical
Description

Mozilla developers and community members Boris Zbarsky, Christian Holler, Honza Bambas, Jon Coppeard, Randell Jesup, André Bargull, Kan-Ru Chen, and Nathan Froyd reported memory safety bugs present in Thunderbird 45.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code.

References