WS-2021-0414

In num-bigint before 0.4.3 two scenarios were reported where BigInt and BigUint multiplication may unexpectedly panic . Rust panics can either cause stack unwinding or program abort, depending on the application configuration. In some settings, an unexpected panic may constitute a denial-of-servi...

num-bigint:cryptofuzz: Segv on unknown address with empty stacktrace

Detailed Report: https://oss-fuzz.com/testcase?key=5936013884063744 Project: num-bigint Fuzzing Engine: libFuzzer Fuzz Target: cryptofuzz Job Type: libfuzzerasani386num-bigint Platform Id: linux Crash Type: Segv on unknown address Crash Address: Crash State: NULL Sanitizer: address ASAN Crash...

GHSA-C2HM-MJXV-89R4 Multiple soundness issues in lexical

lexical contains multiple soundness issues: 1. Bytes::read allows creating instances of types with invalid bit patterns 1. BytesIter::read advances iterators out of bounds 1. The BytesIter trait has safety invariants but is public and not marked unsafe 1. writefloat calls MaybeUninit::assumeinit ...

Multiple soundness issues in lexical

lexical contains multiple soundness issues: 1. Bytes::read allows creating instances of types with invalid bit patterns 1. BytesIter::read advances iterators out of bounds 1. The BytesIter trait has safety invariants but is public and not marked unsafe 1. writefloat calls MaybeUninit::assumeinit ...

Design/Logic Flaw

Frontier is an Ethereum compatibility layer for Substrate. Frontier's modexp precompile uses num-bigint crate under the hood. In the implementation prior to pull request 1017, the cases for modulus being even and modulus being odd are treated separately. Odd modulus uses the fast Montgomery...

CVE-2023-28431 Frontier's modexp precompile is slow for even modulus

Frontier is an Ethereum compatibility layer for Substrate. Frontier's modexp precompile uses num-bigint crate under the hood. In the implementation prior to pull request 1017, the cases for modulus being even and modulus being odd are treated separately. Odd modulus uses the fast Montgomery...

CVE-2023-28431

CVE-2023-28431 describes a vulnerability in Frontier’s modexp precompile used by Substrate. The implementation treats even and odd moduli differently: odd moduli use Montgomery multiplication, while even moduli fall back to a slower plain power algorithm. This mismatch caused a gas-cost discrepan...

CVE-2023-28431

Frontier is an Ethereum compatibility layer for Substrate. Frontier's "modexp" precompile uses "num-bigint" crate under the hood. In the implementation prior to pull request 1017, the cases for modulus being even and modulus being odd are treated separately. Odd modulus uses the fast Montgomery...

CVE-2023-28431 Frontier's modexp precompile is slow for even modulus

Frontier is an Ethereum compatibility layer for Substrate. Frontier's modexp precompile uses num-bigint crate under the hood. In the implementation prior to pull request 1017, the cases for modulus being even and modulus being odd are treated separately. Odd modulus uses the fast Montgomery...

CVE-2023-28431: Incorrect Calculation

Frontier is an Ethereum compatibility layer for Substrate. Frontier's modexp precompile uses num-bigint crate under the hood. In the implementation prior to pull request 1017, the cases for modulus being even and modulus being odd are treated separately. Odd modulus uses the fast Montgomery...

GHSA-FCMM-54JP-7VF6 Frontier's modexp precompile is slow for even modulus

Impact Frontier's modexp precompile uses num-bigint crate under the hood. In the implementation, the cases for modulus being even and modulus being odd are treated separately. Odd modulus uses the fast Montgomery multiplication, and even modulus uses the slow plain power algorithm. This gas cost...

Frontier's modexp precompile is slow for even modulus

Impact Frontier's modexp precompile uses num-bigint crate under the hood. In the implementation, the cases for modulus being even and modulus being odd are treated separately. Odd modulus uses the fast Montgomery multiplication, and even modulus uses the slow plain power algorithm. This gas cost...

GHSA-V935-PQMR-G8V9 Unexpected panics in num-bigint

Impact Two scenarios were reported where BigInt and BigUint multiplication may unexpectedly panic. - The internal mac3 function did not expect the possibility of non-empty all-zero inputs, leading to an unwrap panic. - A buffer was allocated with less capacity than needed for an intermediate...

PT-2021-24461

Name of the Vulnerable Software and Affected Versions: num-bigint versions 0.4.1 through 0.4.2 Description: The issue arises from two scenarios where BigInt and BigUint multiplication may unexpectedly panic. This occurs due to the internal mac3 function not expecting non-empty all-zero inputs,...