Quantum Cadence: Post-Quantum Consensus with Multiple Concurrent Proposers

The consensus protocols of most high-performance blockchains use quorum certificates, which bundle the signatures of a quorum of validators. Signature schemes such as BLS can aggregate the signatures of a whole quorum into a single short signature, which keeps these certificates small. A...

EUVD-2021-29723

Malicious code in bioql PyPI...

EUVD-2021-29724

Malicious code in bioql PyPI...

Five Minutes of DDoS Brings Down Tor: DDoS Attacks on the Tor Directory Protocol and Mitigations

The Tor network offers network anonymity to its users by routing their traffic through a sequence of relays. A group of nine directory authorities maintains information about all available relay nodes using a distributed directory protocol. We observe that the current protocol makes a steep...

CVE-2021-42766

The Proof-of-Stake PoS Ethereum consensus protocol through 2021-10-19 allows an adversary to cause a denial of service long-range consensus chain reorganizations, even when this adversary has little stake and cannot influence network message propagation. This can cause a protocol stall, or an...

CVE-2021-42764

The Proof-of-Stake PoS Ethereum consensus protocol through 2021-10-19 allows an adversary to cause a denial of service delayed consensus decisions, and also increase the profits of individual validators, via short-range reorganizations of the underlying consensus chain...

CVE-2021-42766

The Proof-of-Stake PoS Ethereum consensus protocol through 2021-10-19 allows an adversary to cause a denial of service long-range consensus chain reorganizations, even when this adversary has little stake and cannot influence network message propagation. This can cause a protocol stall, or an...

Design/Logic Flaw

The Proof-of-Stake PoS Ethereum consensus protocol through 2021-10-19 allows an adversary to cause a denial of service delayed consensus decisions, and also increase the profits of individual validators, via short-range reorganizations of the underlying consensus chain...

CVE-2021-42764

Technical details (affected components, root cause, impacted versions, fixes) are not publicly available in the provided documents; monitor for updates.

CVE-2021-42765

Technical details about CVE-2021-42765 are not publicly available in the provided documents; monitor for updates.

CVE-2021-42765

The Proof-of-Stake PoS Ethereum consensus protocol through 2021-10-19 allows an adversary to leverage network delay to cause a denial of service indefinite stalling of consensus decisions...

CVE-2021-42766

Technical details (affected products, root cause, specific versions, fixes) are not publicly provided in the supplied documents. Monitor for updates.

PT-2021-23678

Name of the Vulnerable Software and Affected Versions Ethereum consensus protocol versions prior to 2021-10-19 Description The Proof-of-Stake PoS Ethereum consensus protocol allows an adversary to leverage network delay to cause a denial of service, resulting in the indefinite stalling of consens...

PT-2021-23679

Name of the Vulnerable Software and Affected Versions Ethereum consensus protocol through 2021-10-19 Description The Proof-of-Stake PoS Ethereum consensus protocol allows an adversary to cause a denial of service, specifically long-range consensus chain reorganizations. This can occur even when t...

PT-2021-23677

Name of the Vulnerable Software and Affected Versions Ethereum consensus protocol through 2021-10-19 Description The issue allows an adversary to cause a denial of service, resulting in delayed consensus decisions, and also increase the profits of individual validators. This is achieved via...

Questions Arise About Bitcoin Security Paper

In the wake of the publication of a new academic paper that says there is a fundamental flaw in the Bitcoin protocol that could allow a small cartel of participants to become powerful enough that it could take over the mining process and gather a disproportionate amount of the value in the system...