Security Digest · Critical advisory (no CVE assigned)
GHSA-8x4m-qw58-3pcx: mppx has multiple payment bypass and griefing vulnerabilities
Impact Multiple vulnerabilities were discovered in tempo/charge and tempo/session which allowed for undesirable behaviors, including: - Replaying tempo/charge transaction hashes across push/pull modes, across charge/session endpoints, and via concurrent requests - Performing free tempo/charge…
CVSS 9.3 Critical GitHub-reviewed · critical
Should you act?
- Only if you depend on one of the packages below, directly or transitively, in a vulnerable version. Check your lockfile with
npm audit (or: npm ls <package>). - No CVE has been assigned, so it will not appear in CVE-based scanners that ignore GitHub advisories.
npm audit,pip-auditand Dependabot do read GitHub advisories.
Affected packages
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| npm | mppx | < 0.4.8 | 0.4.8 |
Details
Impact
Multiple vulnerabilities were discovered in tempo/charge and tempo/session which allowed for undesirable behaviors, including: - Replaying tempo/charge transaction hashes across push/pull modes, across charge/session endpoints, and via concurrent requests - Performing free tempo/charge requests due to missing transfer log verification in pull-mode - Replaying tempo/charge credentials across routes via cross-route scope confusion (memo/splits not included in scope binding) - Manipulating the fee payer of a tempo/charge handler into paying for requests (missing sender signature before co-signing) - Bypassing tempo/session voucher signature verification - Piggybacking off existing tempo/session channels via settle voucher reuse and weak channel ID binding - Performing free tempo/session requests by exploiting channel reopen without on-chain settled state - Accepting deductions on finalized tempo/session channels - Bypassing payment on free routes via method-mismatch fallback - Griefing tempo/session channels via force-close detection bypass (closeRequestedAt not persisted)
Patches
Fixed in 0.4.8.
Workarounds
There are no workarounds available for these vulnerabilities.
CVSS: 9.3 (v4.0) CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N
Sources and references
- GitHub Advisory GHSA-8x4m-qw58-3pcx github.com
- github.com github.com