Security readout for executives and security teams
Plain-English summary
CVE-2020-7067 is a PHP memory-read flaw in urldecode(). It matters most where older PHP 7.2, 7.3, or 7.4 builds were compiled with uncommon EBCDIC support. The main business risk is possible exposure of sensitive memory data, not system takeover or service disruption, based on the supplied CVSS vector.
Executive priority
Treat as high priority for affected internet-facing or sensitive systems, but validate the EBCDIC build condition before broad escalation. The vulnerability is serious for confidentiality, yet the uncommon build requirement should focus remediation on confirmed exposure rather than every PHP deployment.
Technical view
Affected PHP versions can read past allocated memory in urldecode() because signed values are incorrectly used as array indexes. The issue maps to CWE-125 and CWE-196. The source bundle limits affected scope to PHP 7.2.x before 7.2.30, 7.3.x before 7.3.17, and 7.4.x before 7.4.5 with EBCDIC support enabled.
Likely exposure
Exposure is likely narrow because the vulnerable condition requires PHP compiled with EBCDIC support, described as uncommon. Risk is higher for internet-facing applications running affected PHP versions on such builds, especially where request data is passed through urldecode(). Standard non-EBCDIC PHP deployments may not meet the vulnerable condition.
Exploitation context
The source bundle does not show CISA KEV listing or other cited evidence of active exploitation. The CVSS vector indicates remote, unauthenticated, low-complexity triggering with high confidentiality impact, but no integrity or availability impact. No exploit details are needed for exposure assessment.
Researcher notes
Key uncertainty is practical exploitability in non-EBCDIC or typical PHP builds; the provided description scopes the bug to EBCDIC support. Do not assume active exploitation or affected downstream products beyond the cited advisories. Validation should focus on version, build configuration, and vendor package status.
Mitigation direction
- Upgrade affected PHP to 7.2.30, 7.3.17, 7.4.5, or vendor-supported fixed packages.
- Prioritize internet-facing PHP systems and products bundling PHP.
- Confirm whether any PHP build uses EBCDIC support.
- Use Debian, Oracle, NetApp, and Tenable advisories for product-specific remediation.
- If patching is delayed, check vendor guidance for supported compensating controls.
Validation and detection
- Inventory PHP 7.2, 7.3, and 7.4 deployments across servers and bundled products.
- Verify whether each deployment is older than the fixed versions named in the CVE.
- Determine whether each PHP build was compiled with EBCDIC support.
- Review vendor advisories for appliances or distributions that include PHP.
- Record public exposure and data sensitivity for any vulnerable instance.
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-125: 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 lookupCWE-196: 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 lookupCVE-2020-7067 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- DSA-4717CVE reference · vendor-advisory, x_refsource_DEBIAN
- DSA-4719CVE reference · vendor-advisory, x_refsource_DEBIAN
- https://www.oracle.com/security-alerts/cpuoct2020.htmlCVE reference · x_refsource_MISC
- https://bugs.php.net/bug.php?id=79465CVE reference · x_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20200504-0001/CVE reference · x_refsource_CONFIRM
- https://www.oracle.com/security-alerts/cpuApr2021.htmlCVE reference · x_refsource_MISC
- https://www.tenable.com/security/tns-2021-14CVE reference · x_refsource_CONFIRM
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 Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Unsigned to Signed Conversion Error
Unsigned to Signed Conversion Error represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.