CVE intelligence and bounded remediation

CVE-2022-47040 — Askey Rtf3505Vw-N1 Firmware security vulnerability

High CVSS 7.8

An issue in ASKEY router RTF3505VW-N1 BR_SV_g000_R3505VMN1001_s32_7 allows attackers to escalate privileges via running the tcpdump command after placing a crafted file in the /tmp directory and sending crafted packets through port 80.

Severity
High
CVSS
7.8 (3.1)
Published
2023-01-26
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-276

Affected products

  • askey / rtf3505vw-n1_firmware / br_sv_g000_r3505vmn1001_s32_7

Matched remediation archetype

Privilege escalation and unsafe privilege management

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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