Security readout for executives and security teams
Plain-English summary
BusyBox netstat can mishandle a malicious DNS PTR record when its value is printed to a VT-compatible terminal. A remote attacker controlling that DNS response could influence what the terminal receives, with reported impact up to arbitrary code execution. The risk depends on vulnerable BusyBox use and an operator or process printing the output.
Executive priority
Prioritize patching where BusyBox is used operationally by administrators or embedded systems. The business risk is high because impact includes code execution, but urgency is moderated by required user interaction and no cited active exploitation.
Technical view
CVE-2022-28391 affects BusyBox through 1.35.0. The issue is tied to unsanitized strings printed by netstat from DNS PTR data to VT-compatible terminals. Public patches reference sanitizing printed strings to printable characters. CVSS 3.1 is 8.8 with network attack vector and required user interaction.
Likely exposure
Exposure is most likely on systems running BusyBox through 1.35.0 where netstat prints reverse DNS names to a compatible terminal. The source bundle does not provide product-specific CPEs or vendor package status beyond Alpine references.
Exploitation context
The CVE record describes remote attack potential, but exploitation requires user interaction. The bundle does not show CISA KEV listing or other evidence of active exploitation. Treat exploit status as unconfirmed from the provided sources.
Researcher notes
Key evidence is the CVE description and Alpine patch references. The affected data is sparse: no CPEs, no upstream advisory in the bundle, and no confirmed exploit activity. Focus research on package versions, patch inclusion, and terminal-output sanitization behavior.
Mitigation direction
- Inventory systems and images for BusyBox through 1.35.0.
- Check vendor or distribution guidance for a patched BusyBox package.
- Apply updates that include printed-string sanitization fixes.
- Limit use of vulnerable netstat output with untrusted DNS data until patched.
Validation and detection
- Confirm deployed BusyBox versions and package build provenance.
- Verify whether operational workflows print netstat DNS output to terminals.
- Check vendor changelogs for the sanitization patches referenced by Alpine.
- Prioritize validation on administrative hosts, appliances, and recovery images using BusyBox.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-88: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-28391 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://gitlab.alpinelinux.org/alpine/aports/-/issues/13661CVE reference · x_refsource_MISC
- https://git.alpinelinux.org/aports/plain/main/busybox/0001-libbb-sockaddr2str-ensure-only-printable-characters-.patchCVE reference · x_refsource_MISC
- https://git.alpinelinux.org/aports/plain/main/busybox/0002-nslookup-sanitize-all-printed-strings-with-printable.patchCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.