Security readout for executives and security teams
Plain-English summary
Tcpreplay versions before 4.3.1 contain a heap-based buffer over-read in packet2tree in tree.c. In practical terms, the tool may read beyond allocated memory while handling packet data. The public bundle does not provide CVSS, confirmed impact, or active exploitation evidence.
Executive priority
Treat as a targeted tooling exposure, not a broad enterprise emergency based on current evidence. Prioritize remediation where Tcpreplay handles untrusted packet data or runs on shared analysis infrastructure.
Technical view
CVE-2018-20552 is described as a heap-based buffer over-read in Tcpreplay before 4.3.1, specifically in packet2tree in tree.c. The bundle references a GitHub issue and fixing commit, but provides no CVSS vector, CWE mapping, exploitability assessment, or affected CPE list.
Likely exposure
Exposure is limited to environments running Tcpreplay before 4.3.1. Highest practical concern is likely on security, QA, lab, or network tooling hosts that process packet captures or packet data, especially from untrusted sources.
Exploitation context
The source bundle does not show KEV listing, active exploitation, public exploit status, or weaponized use. It only establishes the vulnerable component, function, and version boundary before 4.3.1.
Researcher notes
The bundle is sparse: no CVSS, CWE, CPEs, exploit notes, or detailed impact statement. Analysis should stay anchored to the known heap over-read in packet2tree and the before-4.3.1 version boundary.
Mitigation direction
- Inventory Tcpreplay installations and identify versions before 4.3.1.
- Upgrade Tcpreplay to 4.3.1 or later where supported.
- Avoid processing untrusted packet data until affected installations are updated.
- Track Tcpreplay GitHub and CVE records for any additional vendor guidance.
Validation and detection
- Confirm installed Tcpreplay versions across engineering, lab, and security hosts.
- Verify no production workflow depends on Tcpreplay before 4.3.1.
- Review whether users process third-party packet captures or generated traffic files.
- Document package source, installed version, and upgrade evidence.
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.
CVE-2018-20552 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/appneta/tcpreplay/issues/530CVE reference · x_refsource_MISC
- https://github.com/appneta/tcpreplay/pull/532/commits/6b830a1640ca20528032c89a4fdd8291a4d2d8b2CVE 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.