supply chain event / NVI-00010022 / Revision 1
Malicious code in erc20-approve-audit (RubyGems)
GitHub lists this malware advisory for erc20-approve-audit. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
erc20-approve-audit
source listed= 0.9.1
## Source: amazon-inspector (e43c1d294111db5834d006f064d33001b463860783ed8662a5f41a8e7354e4b8) The gem's native extension script, which runs automatically during `gem install`, base64-decodes a Ruby payload and launches it via a double-forked, detached, session-leader background process (setsid, /dev/null reopen, ~20-40 minute delay). The decoded payload opens a TCP socket to the hardcoded bare IP 45.138.12.177:8089 and pipes a local /bin/sh to the socket in an infinite reconnect loop, giving a remote operator full shell control of the installer's host. Execution is gated by anti-analysis checks that suppress the payload inside CI providers (CI, GITHUB_ACTIONS, TRAVIS, JENKINS, GITLAB_CI, CODESPACES), ephemeral/sandbox hosts (uvm, firecracker, sandbox, vagrant), analyst-shaped usernames and working directories (/tmp, /var/tmp, /opt/rubygems, /workspace), and short machine uptimes (<1800s), firing only when developer-signal files are present (~/.ssh, ~/.gitconfig, ~/.gem/credentials, ~/.bundle, ~/.npmrc). The gem's advertised identity does not match its shipped contents: the name is `erc20-approve-audit` but the README and the native makefile target are `bitcoin-rpc-lite` / `bitcoin
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-mq54-cvw7-j5m5 ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.