Security readout for executives and security teams
This flaw affects the Unix/Linux shadow account tools chfn and chsh. A local user could abuse newline handling in profile data to add users or groups to /etc/passwd. The main business concern is unauthorized local account manipulation on systems running the vulnerable shadow version. Exposure is most likely on older Linux systems using the vulnerable shadow package and allowing local users to run chfn or chsh. The source bundle names shadow 1:4.1.4, but its structured affected-product data is incomplete. Treat this as a legacy local privilege and account-integrity risk. Prioritize shared Unix/Linux systems and older distributions first. It is less urgent than an internet-facing remote exploit, but it can matter after initial compromise or on multi-user hosts. Mitigation focus: Check Debian, Ubuntu, Slackware, or your OS vendor guidance for shadow updates.; Apply the vendor-provided shadow package security update where applicable.; Inventory systems running legacy shadow packages, especially around version 1:4.1.4..
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
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CVE-2011-0721 mapping review
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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
- shadow-chfnchsh-crlf-injection(65564)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
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