Security readout for executives and security teams
CVE-2020-36772 weakens CageFS isolation on CloudLinux servers. A local user can make the sendmail proxy read or write some file types outside their CageFS environment. This is mainly a shared-hosting or multi-tenant risk, not a remote internet exploit by itself. Exposure is most likely on CloudLinux hosts using CageFS for tenant isolation, especially shared hosting systems where untrusted local users can invoke mail-related tooling. Treat this as a moderate-priority isolation issue for shared-hosting environments. It is not described as remotely exploitable, but it can undermine tenant separation once an attacker has local account access. Mitigation focus: Inventory CloudLinux systems running CageFS.; Check CageFS versions against the affected records.; Apply CloudLinux vendor updates or fixed CageFS packages when available..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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CWE-73: File access and web shell behavior lookup
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
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CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N1.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://blog.cloudlinux.com/lve-manager-lve-stats-lve-utils-and-alt-python27-cllib-have-been-rolled-out-to-100CVE reference
- https://github.com/sbaresearch/advisories/tree/public/2020/SBA-ADV-20200707-02_CloudLinux_CageFS_Insufficiently_Restricted_Proxy_CommandsCVE reference
Products and packages named in the record
CWE details
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External Control of File Name or Path
External Control of File Name or Path represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.