Security readout for executives and security teams
Plain-English summary
Gerapy versions before 0.9.9 allowed an authenticated user to run arbitrary operating-system commands. For a crawler management system, that can mean full compromise of the host running Gerapy, including data theft, service disruption, or using the server as a foothold.
Executive priority
Prioritize remediation where Gerapy supports business operations or is reachable beyond a tightly controlled admin network. The issue is high severity because one authenticated foothold can become host-level command execution.
Technical view
CVE-2021-32849 is a CWE-78 command injection issue in Gerapy before 0.9.9. The CVSS 3.1 score is 8.8 with network access, low privileges, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impact. Version 0.9.9 fixes the issue; sources state no known workarounds.
Likely exposure
Exposure is most likely in organizations running Gerapy below 0.9.9, especially where authenticated users can access the management interface over a network. Risk increases if Gerapy is internet-accessible or shared with lower-trust accounts.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Public advisories describe the vulnerability, but exploitation requires authenticated access. Treat compromised, stale, or overbroad Gerapy accounts as meaningful risk.
Researcher notes
Focus validation on version identification, authentication boundaries, and operational exposure. Do not assume unauthenticated exploitability from the provided sources. The advisory data supports command injection impact, fixed version 0.9.9, and no known workaround.
Mitigation direction
- Upgrade vulnerable Gerapy deployments to version 0.9.9.
- Check current Gerapy guidance before selecting any newer release.
- Restrict Gerapy access to trusted networks and administrators.
- Review and remove unnecessary Gerapy user accounts.
- Monitor Gerapy hosts for suspicious command execution indicators.
Validation and detection
- Inventory all Gerapy instances and record installed versions.
- Confirm no production instance is below version 0.9.9.
- Verify the management interface is not broadly exposed.
- Review recent Gerapy authentication and administrative activity.
- Check host logs for unexpected process execution by Gerapy.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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-2021-32849 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://securitylab.github.com/advisories/GHSL-2021-076-gerapy/CVE reference · x_refsource_MISC
- https://github.com/Gerapy/Gerapy/security/advisories/GHSA-756h-r2c9-qp5jCVE reference · x_refsource_CONFIRM
- https://github.com/Gerapy/Gerapy/issues/197CVE reference · x_refsource_MISC
- https://github.com/Gerapy/Gerapy/issues/217CVE reference · x_refsource_MISC
- https://lgtm.com/projects/g/Gerapy/Gerapy?mode=tree&ruleFocus=1505994646253CVE 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 Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.