{"id":"CVE-2011-1930","aliases":["DEBIAN-CVE-2011-1930","EUVD-2011-1928","GHSA-h949-qrpv-p29v"],"status":"published","title":"In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not...","description":"In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.20533,"percentile":0.97529,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"published":"2019-11-14T02:01:32Z","modified":"2026-10-23T18:02:47Z","exploits":[{"source":"exploitdb","id":"EDB-35785","title":"klibc 1.5.2 - DHCP Options Processing Remote Shell Command Execution","type":"remote","platform":"linux","date":"2011-05-18","verified":true,"url":"https://www.exploit-db.com/exploits/35785"}],"fixes":[{"ecosystem":"Debian:12","package":"klibc","fixed_in":["1.5.22-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"klibc","fixed_in":["1.5.22-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"klibc","fixed_in":["1.5.22-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"klibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.22-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"klibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.22-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"klibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.22-1"}]}]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"klibc","product":"klibc"},{"vendor":"klibc_project","product":"klibc"}],"references":[{"url":"https://security-tracker.debian.org/tracker/CVE-2011-1930","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://access.redhat.com/security/cve/cve-2011-1930","tags":["x_refsource_MISC","x_transferred","Not Applicable","Third Party Advisory","advisory","web"]},{"url":"http://security.gentoo.org/glsa/glsa-201309-21.xml","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2012/05/22/12","tags":["x_refsource_MISC","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"http://www.securityfocus.com/bid/47924","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1930"},{"url":"https://github.com/advisories/GHSA-h949-qrpv-p29v"}],"sources":{"cve":[{"id":"CVE-2011-1930","description":"In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.","status":"published","published":"2019-11-14T02:01:32Z","modified":"2024-08-06T22:46:00.615Z","updated_at":"2026-11-02T14:35:38.321377Z"}],"euvd":[{"id":"EUVD-2011-1928","description":"In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.","status":"published","published":"2019-11-14T02:01:32Z","modified":"2024-08-06T22:46:00Z","updated_at":"2026-11-03T01:55:54.666744Z"}],"ghsa":[{"id":"GHSA-h949-qrpv-p29v","title":"In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not...","description":"In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.","status":"published","published":"2022-04-22T00:24:13Z","modified":"2024-04-03T23:04:48Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T14:55:46.758976Z"}],"nvd":[{"id":"CVE-2011-1930","description":"In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.","status":"published","published":"2019-11-14T03:15:10.51Z","modified":"2026-06-16T23:30:24.9Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:02:12.945371Z"}],"osv":[{"id":"CVE-2011-1930","description":"In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.","status":"published","published":"2019-11-14T03:15:10Z","modified":"2026-04-10T03:41:48.669833Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-1930","description":"In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.","status":"published","published":"2019-11-14T03:15:10.51Z","modified":"2026-10-23T18:02:47.296672004Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:24.612044Z"}]}}