Security readout for executives and security teams
Plain-English summary
JetBrains TeamCity had a flaw in how ZIP extraction handled user input. JetBrains says the issue was fixed in TeamCity 2018.2.2. The public sources do not provide severity, impact detail, affected version ranges, or exploitation evidence, so urgency depends on whether an organization still runs older TeamCity builds.
Executive priority
Prioritize if TeamCity remains below 2018.2.2, because CI/CD systems can be high-value infrastructure. Without severity or exploitation evidence, this is not source-supported as an emergency, but unpatched legacy TeamCity should be remediated promptly.
Technical view
CVE-2019-12841 describes incorrect user-input handling during ZIP extraction in JetBrains TeamCity. The CVE record names TeamCity 2018.2.2 as the fixed version but does not provide CVSS, CWE, exact affected versions, attack prerequisites, or impact boundaries. Treat pre-2018.2.2 TeamCity exposure as requiring vendor-guided remediation.
Likely exposure
Exposure is most likely in legacy JetBrains TeamCity deployments that have not been upgraded to 2018.2.2 or later. The source bundle does not identify exact affected version ranges, configurations, or whether authentication is required.
Exploitation context
The provided sources do not show active exploitation. The CVE is not listed as KEV in the source bundle, and no cited source describes public exploit status, exploit reliability, or real-world abuse.
Researcher notes
The public record is sparse. It confirms product, vulnerability class at a high level, and fixed version, but omits CVSS, CWE, attack vector, authentication requirements, impact, and affected range. Avoid asserting path traversal, remote code execution, or exploitation without additional vendor evidence.
Mitigation direction
- Upgrade TeamCity to 2018.2.2 or a later supported release.
- Confirm the upgrade path against current JetBrains guidance.
- Inventory any legacy TeamCity servers and retire unsupported instances.
- If immediate upgrade is delayed, ask JetBrains for supported compensating controls.
Validation and detection
- Identify all TeamCity servers and record their exact versions.
- Verify each instance is running TeamCity 2018.2.2 or later.
- Review change records for historical upgrades from vulnerable-era builds.
- Check TeamCity logs for unusual archive handling activity, where logging is available.
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.
CVE-2019-12841 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://blog.jetbrains.com/blog/2019/06/19/jetbrains-security-bulletin-q1-2019/CVE reference · x_refsource_CONFIRM
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.