Parallel Reconstruction of Lawful TLS Wiretapping
3 hours ago
- #ACME vulnerability
- #lawful interception
- #TLS security
- TLS wiretapping using root CA certificates is a verified reality, not just a conspiracy theory.
- A lawful intercept operation failed due to an expired TLS certificate, leading to public exposure and investigation.
- Analysis of a remote code execution vulnerability in acme.sh (CVE-2023-38198) reveals how it could be exploited for certificate issuance.
- The exploit involved command injection via ACME's http-01 challenge, using IFS tricks to bypass character filters.
- A proof-of-concept demonstrates exploiting acme.sh to gain a privileged reverse shell on a victim server.
- The incident highlights that software running TLS/ACME protocols is often the weakest link, despite protocol rigor.
- Mitigation strategies are discussed, emphasizing the need for better security in ACME clients and network routing controls.