Security readout for executives and security teams
Plain-English summary
CVE-2018-7689 let a logged-in Open Build Service user change packages they should not control. For organizations using OBS to build or distribute software, the main risk is unauthorized package tampering, which can undermine release integrity and trust in build outputs.
Executive priority
Prioritize remediation where OBS is used for production software builds or package distribution. This is a supply-chain integrity risk rather than a confidentiality issue, and authenticated access is required.
Technical view
The issue is a missing authorization check, CWE-862, in InitializeDevelPackage in openSUSE Open Build Service before 2.9.3. An authenticated low-privilege user could modify packages without write permission. CVSS 3.0 is 7.1 with high integrity impact and low availability impact.
Likely exposure
Exposure is limited to Open Build Service deployments running versions before 2.9.3 with authenticated user access. The bundle does not identify specific downstream distributions, managed services, or CPEs beyond openSUSE Open Build Service.
Exploitation context
The sources describe a permission-check flaw and a fixing release. The CVE is not listed as KEV in the supplied bundle, and no cited source in the bundle states active exploitation.
Researcher notes
Focus validation on authorization boundaries around InitializeDevelPackage and package write permissions. Evidence supports the affected component, impact, CVSS, and fixed release threshold, but the supplied bundle does not provide exploit telemetry or broader affected-version granularity.
Mitigation direction
- Upgrade Open Build Service to 2.9.3 or later.
- Review SUSE/openSUSE advisory guidance for deployment-specific instructions.
- Restrict authenticated OBS access to trusted users until patched.
- Audit package changes around the exposure window for unauthorized modifications.
Validation and detection
- Inventory all Open Build Service deployments and record versions.
- Confirm affected instances are upgraded beyond versions before 2.9.3.
- Verify the authorization fix from the referenced commit is present.
- Review OBS package history for changes by users lacking write permission.
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-862: 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 lookupCVE-2018-7689 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 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L2.84.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.1HighVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2018-7689CVE reference · x_refsource_CONFIRM
- https://github.com/openSUSE/open-build-service/commit/990ef7cccef6f38fc1d1a1bb22a08e174dcba43bCVE reference · x_refsource_CONFIRM
- [opensuse-buildservice] 20180606 Open Build Service 2.9.3 releasedCVE 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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.