Security readout for executives and security teams
CVE-2018-6954 is a local privilege-risk flaw in systemd-tmpfiles through systemd 237. A logged-in local user could abuse symlink handling to gain ownership of files they should not control. That can lead to confidentiality, integrity, and availability impact on affected Linux systems. Exposure is most likely on Linux systems or images using systemd-tmpfiles from systemd through 237. Internet-facing status is not the key driver; the attacker needs local access or an already-compromised low-privilege context. The source bundle does not provide complete affected vendor or package-version data. Treat this as high priority for Linux servers with local users, shared hosting, CI runners, or exposed application workloads. It is not shown as remotely exploitable from the bundle, but it can increase the impact of an initial compromise by enabling unauthorized file ownership changes. Mitigation focus: Apply relevant distribution vendor updates for systemd packages where available.; Review Ubuntu USN-3816-1, USN-3816-2, and openSUSE-SU-2019:1450 guidance.; Prioritize multi-user servers and systems running untrusted local workloads..
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
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ATT&CK lookup starting points
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CWE-59: Exact CWE lookup
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Open ATT&CK lookupCVE-2018-6954 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
- 7.8 (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: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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- USN-3816-2CVE reference · vendor-advisory, x_refsource_UBUNTU
- https://github.com/systemd/systemd/issues/7986CVE reference · x_refsource_MISC
- USN-3816-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8CVE reference · mailing-list, x_refsource_MLIST
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8CVE reference · mailing-list, x_refsource_MLIST
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 Link Resolution Before File Access ('Link Following')
Improper Link Resolution Before File Access ('Link Following') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.