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AUSCERT External Security Bulletin Redistribution
MFSA 2020-31 Security Vulnerabilities fixed in Firefox ESR 68.11
29 July 2020
AusCERT Security Bulletin Summary
Product: Firefox ESR 68.11
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Access Privileged Data -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
CVE Names: CVE-2020-15659 CVE-2020-15652 CVE-2020-6514
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Mozilla Foundation Security Advisory 2020-31
Security Vulnerabilities fixed in Firefox ESR 68.11
July 28, 2020
Firefox ESR 68.11
# CVE-2020-15652: Potential leak of redirect targets when loading scripts in a
possible to leak the result of a cross-origin redirect. This applied only to
content that can be parsed as script.
o Bug 1634872
# CVE-2020-6514: WebRTC data channel leaks internal address to peer
Natalie Silvanovich of Google Project Zero
WebRTC used the memory address of a class instance as a connection identifier.
Unfortunately, this value is often transmitted to the peer, which allows
o Bug 1642792
# CVE-2020-6463: Use-after-free in ANGLE gl::Texture::onUnbindAsSamplerTexture
Reported by Pawel Wylecial of REDTEAM.PL
Crafted media files could lead to a race in texture caches, resulting in a
use-after-free, memory corruption, and a potentially exploitable crash.
o Bug 1635293
# CVE-2020-15659: Memory safety bugs fixed in Firefox 79 and Firefox ESR 68.11
Mozilla developers and community
Mozilla developers Jason Kratzer and Luke Wagner reported memory safety bugs
present in Firefox 78 and Firefox ESR 68.01. 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.
o Memory safety bugs fixed in Firefox 79 and Firefox ESR 68.11
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