Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local users to add new users or groups to…

Description

Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local users to add new users or groups to /etc/passwd via the GECOS field.

Scores

EPSS (exploitation in 30 days)

2.3% · top 17% of all CVEs (3 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.4.

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (11)

• ADV-2011-0398 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• ADV-2011-0773 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 43345 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• DSA-2164 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• USN-1065-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• ADV-2011-0396 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• shadow-chfnchsh-crlf-injection(65564) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• 70895 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• 46426 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• SSA:2011-086-03 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
• 42505 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2011-0721](https://trackcve.app/badge/CVE-2011-0721.svg)](https://trackcve.app/cve/CVE-2011-0721)

Record last updated 6 Aug 2024, 22:05 UTC.