Security readout for executives and security teams
Plain-English summary
A critical access-control flaw in Microsoft’s Entra Jira Single Sign-On Plugin could let a remote, unauthenticated attacker gain elevated privileges. Successful exploitation could compromise sensitive information, alter Jira data, and disrupt service. The supplied record identifies version 1.0.0 as affected.
Executive priority
Treat this as an urgent remediation item for any organization using the affected Jira SSO plugin. Its unauthenticated network attack path and potential full business impact justify rapid inventory, vendor-guided updating, access restriction, and log review, even without confirmed active exploitation.
Technical view
CVE-2024-21401 is an improper authorization vulnerability (CWE-284). Its CVSS 3.1 score is 9.8, with network access, low complexity, no required privileges, and no user interaction. The vector indicates potentially high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where the Microsoft Entra Jira Single Sign-On Plugin version 1.0.0 is installed and reachable through network-accessible Jira services. The supplied evidence does not establish whether other versions are affected.
Exploitation context
The CVSS temporal vector marks proof-of-concept-level exploit maturity. However, the source bundle reports that this CVE is not in CISA KEV, and no supplied source confirms active exploitation. Treat it as readily approachable, not proven exploited in the wild.
Researcher notes
The supplied data provides severity, attack characteristics, CWE classification, and one affected version, but no technical root-cause detail, patched version, detection signature, or confirmed exploitation evidence. Avoid extending the affected-version range without Microsoft confirmation.
Mitigation direction
- Inventory Jira deployments for the Microsoft Entra single sign-on plugin and record installed versions.
- Prioritize systems running the identified affected version 1.0.0.
- Review Microsoft’s advisory for the supported update or vendor-prescribed mitigation.
- Restrict unnecessary network access to affected Jira services until remediation is verified.
- Monitor authentication and administrative activity for unexpected privilege changes.
Validation and detection
- Confirm the plugin name and installed version on every Jira deployment.
- Verify the vendor-recommended update or mitigation is applied consistently.
- Retest single sign-on and authorization boundaries after remediation.
- Review logs for unexplained administrator access, account changes, or sensitive Jira modifications.
- Document systems where version or remediation status cannot be confirmed.
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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-21401 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
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.
SSVC decision data
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:H/A:H/E:P/RL:O/RC:C3.95.9microsoftVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft Entra Jira Single-Sign-On Plugin Elevation of Privilege VulnerabilityCVE reference, microsoft · vendor-advisory, patch
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.