GCVE-VVD-MAGEIA-2020-318

WebRTC used the memory address of a class instance as a connection identifier. Unfortunately, this value is often transmitted to the peer, which allows bypassing ASLR (CVE-2020-6514). Crafted media files could lead to a race in texture caches, resulting in a use-after-free in ANGLE gl::Texture::onUnbindAsSamplerTexture, memory corruption, and a potentially exploitable crash (CVE-2020-6463). By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script (CVE-2020-15652). Mozilla developers Jason Kratzer and Luke Wagner reported memory safety bugs present in Firefox 78 and Firefox ESR 68.10. 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 (CVE-2020-15659). Using the EM side-channel, it is possible to extract the position of zero and non-zero wNAF digits while nss-certutil tool performs scalar multiplication during the ECDSA signature generation, leaking partial information about the ECDSA nonce. Given a small number of ECDSA signatures, this information can be used to steal the private key. The highest threat from this vulnerability is to data confidentiality (CVE-2020-6829). A side channel flaw was found in the way P-384 and P-521 curses are used in generation EDSA signatures, leaking partial information about the ECDSA nonce. Given a small number of ECDSA signatures, this information can be used to steal the private key. The highest threat from this vulnerability is to data confidentiality (CVE-2020-12400). Using the EM side-channel, it is possible to extract the position of zero and non-zero wNAF digits while nss-certutil tool performs scalar multiplication during the ECDSA signature generation, leaking partial information about the ECDSA nonce. Given a small number of ECDSA signatures, this information can be used to steal the private key. The highest threat from this vulnerability is to data confidentiality (CVE-2020-12401). Multi-part ChaCha20 was not functioning correctly and tag length was not strictly enforced (CVE-2020-12403).