Description
ION-DTN before 4.2.1-a.1 contains a denial of service vulnerability that allows unauthenticated remote attackers to crash the ION process by sending a BPv7 bundle with a zero-length payload. The canonicalizePayloadBlock() function in bpsec_util.c passes bundle->payload.length to zco_clone() without validating it against zero, causing a failed CHKZERO assertion that triggers sm_Abort() and terminates the process with SIGABRT before any HMAC verification occurs, requiring no valid key or credential to exploit.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nasa-jpl | ION-DTN | ≤ 4.2.0 | 4.2.1-a.1 |
References
- GitHub Security Advisory (GHSA-9vgc-2r6g-6qwf) vendor-advisory
- https://www.vulncheck.com/advisories/ion-dtn-a-1-denial-of-service-via-canonicalizepayloadblock-assertion third-party-advisory