Security readout for executives and security teams
Plain-English summary
CVE-2022-2995 is a CRI-O container engine flaw where supplementary Linux groups may be handled incorrectly. In affected containers, a user who can run code may gain unintended group-based access to sensitive files or modify data that group permissions were meant to protect.
Executive priority
Treat as high priority for CRI-O-based clusters, especially multi-tenant or sensitive workloads. It is not described as remote internet exploitation, but it can undermine container isolation assumptions where group permissions protect data.
Technical view
The issue affects CRI-O 1.25.0 and is classified as CWE-284. The CVSS 3.1 score is 7.1 with local attack vector, low complexity, low privileges, no user interaction, and high confidentiality and integrity impact. The condition depends on containers using supplementary groups for access control.
Likely exposure
Exposure is most likely in Kubernetes or container environments running CRI-O 1.25.0 where workloads rely on supplementary groups to protect mounted files, shared volumes, or other sensitive resources.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires direct access to an affected container and the ability to execute code inside it, plus relevant group-based permissions.
Researcher notes
Evidence is strongest for CRI-O 1.25.0 and the supplementary-groups access-control condition. The bundle does not provide a fixed version, exploit-in-the-wild evidence, or full downstream distro impact, so validation should focus on runtime version and workload permission design.
Mitigation direction
- Inventory CRI-O deployments and identify any running version 1.25.0.
- Review CRI-O PR 6159 and downstream vendor guidance for corrected builds.
- Prioritize upgrades where workloads use supplementary groups for sensitive access controls.
- Review mounted data, group ownership, and write permissions in affected containers.
- Limit who can execute code or obtain shells inside sensitive containers.
Validation and detection
- Confirm whether any cluster nodes run CRI-O 1.25.0.
- Identify workloads that set or rely on supplementary groups.
- Check whether those workloads mount sensitive files or shared writable volumes.
- Verify deployed CRI-O packages include the upstream or vendor correction.
- Document any compensating controls for containers that cannot be updated immediately.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-2995 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
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N1.85.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-investigation-and-mitigation/CVE reference · x_refsource_MISC
- https://github.com/cri-o/cri-o/pull/6159CVE 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 Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.