Security readout for executives and security teams
Plain-English summary
This issue can let a low-privileged account on an rConfig 3.9.6 server become root because the web server user may run chmod with root rights without a password. That is a full server takeover risk if an attacker already has limited access.
Executive priority
Prioritize any internet-facing or shared rConfig 3.9.6 server. This is not proven actively exploited here, but root escalation can turn a minor foothold into total system compromise.
Technical view
CVE-2021-29005 describes insecure post-install permissions in rConfig server 3.9.6. The apache user may execute chmod as root without password, creating a local privilege escalation path from low privilege to root. The public record provides no CVSS, CWE, CPE, or vendor patch detail.
Likely exposure
Exposure appears limited to rConfig server 3.9.6 installations with the described insecure permission state after installation. The bundle does not identify broader affected versions, CPEs, or package variants.
Exploitation context
The CVE is not listed as KEV in the bundle, so active exploitation is not established. A public proof-of-concept reference exists, which raises validation urgency for exposed rConfig systems.
Researcher notes
The source bundle is sparse: no CVSS, CWE, CPE, affected matrix, or vendor advisory is included. Analysis relies on the CVE description and a public proof-of-concept reference, without reproducing exploit details.
Mitigation direction
- Identify all rConfig server 3.9.6 hosts.
- Remove passwordless root permission for apache where present.
- Restrict shell and administrative access to rConfig hosts.
- Check vendor or project guidance for fixed versions or hardening steps.
- Rebuild affected hosts if root compromise is suspected.
Validation and detection
- Confirm whether rConfig server 3.9.6 is installed.
- Review privilege delegation rules for the apache user.
- Check whether apache can perform root-owned permission changes without authentication.
- Review administrative logs for suspicious privilege changes.
- Verify remediation removed the unsafe delegated 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.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-29005 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.
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
- https://github.com/mrojz/rconfig-exploit/blob/main/CVE-2021-29005-POC.shCVE reference, mitre
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.