Description
Lancet through 2.3.9 contains an SSRF protection bypass vulnerability in netutil.IsInternalIP that misclassifies IPv6 private, link-local, CGNAT and transition addresses as external. Attackers can supply hostnames resolving to these address forms, including NAT64, 6to4 or Teredo embedding internal IPv4, to reach internal services or cloud metadata endpoints.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
duke-git lancet
Default version status: unaffected
2.1.2 to ≤ 2.3.9affected
pkg:golang/github.com/duke-git/lancet/v2duke-git lancet
Default version status: unaffected
1.3.1 to ≤ 1.4.6affected
pkg:golang/github.com/duke-git/lancetReferences
- https://github.com/duke-git/lancet/issues/356 ↗
- https://github.com/duke-git/lancet/pull/357 ↗
- https://github.com/duke-git/lancet/commit/835111c832939a85416d686a1e99d5fe7060c9b4 ↗
- https://github.com/duke-git/lancet/blob/v2.3.9/netutil/net.go#L192-L205 ↗
- https://github.com/duke-git/lancet/blob/v1.4.6/netutil/net.go#L158-L170 ↗
- https://github.com/duke-git/lancet ↗
- https://www.vulncheck.com/advisories/lancet-through-2.3.9-ssrf-protection-bypass-via-netutil-isinternalip ↗