Skip to content
Patch Next
Sign inAdd to your agent

← Public intelligence

Go package

github.com/holiman/uint256

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 6.5GoPublished

    Denial of service in geth

    CVE-2020-26242 · GHSA-jm5c-rv3w-w83m

    Affected
    • Go github.com/holiman/uint256 >= 0.1.0, < 1.1.1
    Fixed in
    1.1.1· Vendor fix available
    Issue
    Impact Denial-of-service (crash) during block processing Details Affected versions suffer from a vulnerability which can be exploited through the MULMOD operation, by specifying a modulo of 0: mulmod(a,b,0), causing a panic in the underlying library. The crash was in the uint256 library, where a buffer underflowed. if d == 0, dLen remains 0 and https://github.com/holiman/uint256/blob/4ce82e695c10ddad57215bdbeafb68b8c5df2c30/uint256.go#L451 will try to access index [-1]. The uint256 library was first merged in this commit, on 2020-06-08. Exploiting this vulnerabilty would cause all vulnerable nodes to drop off the network. The issue was brought to our attention through a bug report, showing a panic occurring on sync from genesis on the Ropsten network. It was estimated that the least obvious way to fix this would be to merge the fix into uint256, make a new release of that library and then update the geth-dependency. - https://github.com/holiman/uint256/releases/tag/v1.1.1 was made…

    Recommended action: Upgrade to 1.1.1 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →