{"id":"CVE-2011-0721","aliases":["DEBIAN-CVE-2011-0721","DSA-2164-1","EUVD-2011-0735","GHSA-6wqp-749m-jfw7"],"status":"published","title":"Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local...","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.","severity":{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02309,"percentile":0.83496,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2011-02-16T00:00:00Z","modified":"2026-10-23T17:47:44Z","fixes":[{"ecosystem":"Debian:12","package":"shadow","fixed_in":["1:4.1.4.2+svn3283-3"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"shadow","fixed_in":["1:4.1.4.2+svn3283-3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"shadow","fixed_in":["1:4.1.4.2+svn3283-3"],"sources":["osv"]},{"ecosystem":"Debian:6.0","package":"shadow","fixed_in":["1:4.1.4.2+svn3283-2+squeeze1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"shadow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.1.4.2+svn3283-3"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"shadow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.1.4.2+svn3283-3"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"shadow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.1.4.2+svn3283-3"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"shadow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.1.4.2+svn3283-2+squeeze1"}]}],"versions":["1:4.1.4.2+svn3283-2"]}],"products":[{"vendor":"debian","product":"shadow"}],"references":[{"url":"http://www.vupen.com/english/advisories/2011/0398","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.vupen.com/english/advisories/2011/0773","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/43345","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.debian.org/security/2011/dsa-2164","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://www.ubuntu.com/usn/USN-1065-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","advisory"]},{"url":"http://www.vupen.com/english/advisories/2011/0396","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Vendor Advisory","advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/65564","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"http://osvdb.org/70895","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/46426","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://slackware.com/security/viewer.php?l=slackware-security\u0026y=2011\u0026m=slackware-security.380014","tags":["vendor-advisory","x_refsource_SLACKWARE","x_transferred","web"]},{"url":"http://secunia.com/advisories/42505","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-0721"},{"url":"https://github.com/advisories/GHSA-6wqp-749m-jfw7"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-0721","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2011-0721","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.","status":"published","published":"2011-02-18T23:00:00Z","modified":"2024-08-06T22:05:53.41Z","updated_at":"2026-11-02T14:35:39.079595Z"}],"euvd":[{"id":"EUVD-2011-0735","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.","status":"published","published":"2011-02-18T23:00:00Z","modified":"2024-08-06T22:05:53Z","updated_at":"2026-11-03T01:55:59.230529Z"}],"ghsa":[{"id":"GHSA-6wqp-749m-jfw7","title":"Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local...","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.","status":"published","published":"2022-05-17T02:01:57Z","modified":"2023-01-27T05:00:47Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:41:45.307734Z"}],"nvd":[{"id":"CVE-2011-0721","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.","status":"published","published":"2011-02-19T01:00:03.353Z","modified":"2026-06-16T23:27:56.927Z","cvss":[{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:06.042049Z"}],"osv":[{"id":"CVE-2011-0721","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.","status":"published","published":"2011-02-19T01:00:03Z","modified":"2026-04-10T03:41:39.533772Z","updated_at":"2026-11-02T15:43:57.991581Z"},{"id":"DEBIAN-CVE-2011-0721","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.","status":"published","published":"2011-02-19T01:00:03.353Z","modified":"2026-10-23T17:47:44.672240444Z","updated_at":"2026-11-02T15:45:24.316685Z"},{"id":"DSA-2164-1","title":"shadow - missing input sanitization","status":"published","published":"2011-02-16T00:00:00Z","modified":"2026-03-09T01:23:06.115077Z","updated_at":"2026-11-02T15:46:15.108335Z"}]}}