{"items":[{"id":"NVI-00009710","kind":"supply_chain_event","title":"Malicious code in eth-address-utils (RubyGems)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cg29-22qj-86m4"],"plain_summary":"GitHub lists this malware advisory for eth-address-utils, eth-address-utils, eth-address-utils. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-3838f359580f789db505ea4dcb51005a"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-3838f359580f789db505ea4dcb51005a","url":"https://github.com/advisories/GHSA-cg29-22qj-86m4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cg29-22qj-86m4","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:06:53.250Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3838f359580f789db505ea4dcb51005a"],"technology":"eth-address-utils","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (8ed9d372d4fc694697be41c22e7c4d02d873e53e16bde2336069787b7b961ce2)\nThe gem advertises itself as an Ethereum address utility library but its extconf.rb (auto-executed by `gem install`) carries a base64-encoded payload that is decoded and passed to `eval` inside a double-forked, detached background process. The decoded payload sleeps 20-40 minutes and then opens a TCPSocket to the hardcoded remote host 45.138.12.177 on port 8090, bridging the socket to `IO.popen(['/bin/sh'],'r+')` — a reverse shell giving the operator of that IP full remote code execution on the installer's host under the installing user's privileges. The extension declares a native component named `req_throttle_mini` but ships no corresponding C sources; `create_makefile` is appended only as camouflage. Payload execution is gated by anti-analysis checks that skip CI environments, ephemeral/sandbox hostnames (uvm/firecracker/sandbox/vagrant), synthetic analyst usernames (sandbox/tester/analys/scanner), build paths under /tmp, /opt/rubygems, /workspace, systems with uptime under 1800 seconds, and hosts lacking developer-identity artifacts such as ~/.ssh, ~/.gitconfig, ~/.gem/credentials, or","public_affected_ranges":["= 1.0.0"]},{"certainty":"source_listed","source_ids":["sr-3838f359580f789db505ea4dcb51005a"],"technology":"eth-address-utils","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (8ed9d372d4fc694697be41c22e7c4d02d873e53e16bde2336069787b7b961ce2)\nThe gem advertises itself as an Ethereum address utility library but its extconf.rb (auto-executed by `gem install`) carries a base64-encoded payload that is decoded and passed to `eval` inside a double-forked, detached background process. The decoded payload sleeps 20-40 minutes and then opens a TCPSocket to the hardcoded remote host 45.138.12.177 on port 8090, bridging the socket to `IO.popen(['/bin/sh'],'r+')` — a reverse shell giving the operator of that IP full remote code execution on the installer's host under the installing user's privileges. The extension declares a native component named `req_throttle_mini` but ships no corresponding C sources; `create_makefile` is appended only as camouflage. Payload execution is gated by anti-analysis checks that skip CI environments, ephemeral/sandbox hostnames (uvm/firecracker/sandbox/vagrant), synthetic analyst usernames (sandbox/tester/analys/scanner), build paths under /tmp, /opt/rubygems, /workspace, systems with uptime under 1800 seconds, and hosts lacking developer-identity artifacts such as ~/.ssh, ~/.gitconfig, ~/.gem/credentials, or","public_affected_ranges":["> 0"]},{"certainty":"source_listed","source_ids":["sr-3838f359580f789db505ea4dcb51005a"],"technology":"eth-address-utils","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (8ed9d372d4fc694697be41c22e7c4d02d873e53e16bde2336069787b7b961ce2)\nThe gem advertises itself as an Ethereum address utility library but its extconf.rb (auto-executed by `gem install`) carries a base64-encoded payload that is decoded and passed to `eval` inside a double-forked, detached background process. The decoded payload sleeps 20-40 minutes and then opens a TCPSocket to the hardcoded remote host 45.138.12.177 on port 8090, bridging the socket to `IO.popen(['/bin/sh'],'r+')` — a reverse shell giving the operator of that IP full remote code execution on the installer's host under the installing user's privileges. The extension declares a native component named `req_throttle_mini` but ships no corresponding C sources; `create_makefile` is appended only as camouflage. Payload execution is gated by anti-analysis checks that skip CI environments, ephemeral/sandbox hostnames (uvm/firecracker/sandbox/vagrant), synthetic analyst usernames (sandbox/tester/analys/scanner), build paths under /tmp, /opt/rubygems, /workspace, systems with uptime under 1800 seconds, and hosts lacking developer-identity artifacts such as ~/.ssh, ~/.gitconfig, ~/.gem/credentials, or","public_affected_ranges":["= 1.0.3"]}],"null_published_at":"2026-10-31T22:13:39.930Z","source_updated_at":"2026-10-11T15:32:20.000Z","source_disclosed_at":"2026-10-05T18:34:14.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T22:06:53.250Z"}],"next_cursor":null,"snapshot_revision":"42594"}