Security readout for executives and security teams
Plain-English summary
MAWK 1.3.3-17 and earlier is reported to contain a critical stack-based buffer overflow that could allow arbitrary code execution when malicious attacker-controlled input is processed. Treat this as high priority anywhere MAWK is exposed through scripts, automation, or services that process untrusted data.
Executive priority
Prioritize remediation for any production, internet-adjacent, or automated processing environment where MAWK handles untrusted input. If MAWK is only installed but unused or only processes trusted local data, track and update through normal urgent patching once vendor guidance is available.
Technical view
The bundle describes CVE-2017-20229 as a CWE-787 stack-based buffer overflow in MAWK 1.3.3-17 and prior, caused by inadequate boundary checks on user-supplied input. The supplied CVSS v3.1 score is 9.8 critical with network attack vector, low complexity, no privileges, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impact. The bundle includes public exploit-reference evidence but does not include vendor patch details, CPEs, or confirmed active exploitation evidence.
Likely exposure
Systems are likely exposed if they run MAWK 1.3.3-17 or earlier and process untrusted input through shell scripts, automation pipelines, log processing, data transformation jobs, CI tasks, or backend services. Direct internet exposure depends on whether a reachable service invokes MAWK with attacker-controlled content.
Exploitation context
The source bundle references an ExploitDB entry, indicating public exploit information exists. KEV is false, and the bundle does not provide evidence of known active exploitation in the wild. Do not infer active exploitation from the exploit reference alone.
Researcher notes
Assessment is limited to the supplied bundle. Patch evidence, fixed version, vendor advisory details, affected CPEs, and active exploitation evidence are not provided. The CVE is listed as published on 2026-03-28 despite the 2017 CVE year; this response uses the bundle dates as supplied.
Mitigation direction
- Inventory systems and containers for MAWK, especially version 1.3.3-17 or earlier.
- Where MAWK processes untrusted data, remove that exposure or isolate the workflow until vendor guidance is confirmed.
- Check MAWK package/vendor distribution guidance for a fixed version or backported security update; the provided bundle does not include patch evidence.
- Apply the vendor or distribution-provided update once confirmed.
- If an immediate update is unavailable, restrict input sources, sandbox the MAWK execution context, and reduce privileges for scripts invoking MAWK.
Validation and detection
- Confirm installed MAWK versions across hosts, images, and build environments.
- Identify scripts or services that pass user-controlled or external data into MAWK.
- Verify whether the operating system or package vendor has published an advisory or fixed package for this CVE.
- After remediation, re-check package versions and confirm vulnerable versions are no longer present in runtime images or hosts.
- Review logs and telemetry around MAWK-invoking services for suspicious crashes or anomalous processing failures, without treating crashes as proof of exploitation.
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-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2017-20229 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-42357CVE reference · exploit
- VulnCheck Advisory: MAWK 1.3.3-17 Stack-Based Buffer OverflowCVE reference · third-party-advisory
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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.