DEBIAN-CVE-2026-48684
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-48684
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48684.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-48684
- Upstream
- Published
- 2026-05-26T16:16:26Z
- Modified
- 2026-09-14T17:03:42Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
- Summary
- [none]
- Details
-
FastNetMon Community Edition through 1.2.9 contains an out-of-bounds read in the NetFlow v9 options template parser. In process_netflow_v9_options_template() (src/netflow_plugin/netflow_v9_collector.cpp), the scope parsing loop (lines 224-229) iterates until scopes_offset reaches the attacker-controlled option_scope_length value, reading netflow9_template_flowset_record_t structures at each step. No bounds check validates that (zone_address + scopes_offset + sizeof(record)) stays within the flowset. The same issue affects the options field loop (lines 241-257) with option_length. Furthermore, option_scope_length is not validated to be a multiple of sizeof(netflow9_template_flowset_record_t), potentially causing misaligned reads. An attacker can trigger reads past the end of the UDP packet buffer.
- References
Affected packages
Debian:12 / fastnetmon
Package
- Name
- fastnetmon
- Purl
- pkg:deb/debian/fastnetmon?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / fastnetmon
Package
- Name
- fastnetmon
- Purl
- pkg:deb/debian/fastnetmon?arch=source&distro=trixie
Debian:14 / fastnetmon
Package
- Name
- fastnetmon
- Purl
- pkg:deb/debian/fastnetmon?arch=source&distro=forky