{"id":"CVE-2007-1189","aliases":["EUVD-2007-1186","GHSA-4763-4594-fp9p"],"status":"published","title":"Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows...","description":"Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addresses with kernel memory via a large n argument, as demonstrated by (1) modifying the iseve function to gain privileges and (2) making the devpermcheck function grant unrestricted device permissions.","severity":{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00804,"percentile":0.56984,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2007-03-02T19:00:00Z","modified":"2026-06-16T22:37:06Z","exploits":[{"source":"exploitdb","id":"EDB-3383","title":"Plan 9 Kernel - 'devenv.c OTRUNC/pwrite' Local Privilege Escalation","type":"local","platform":"plan9","date":"2007-02-28","verified":true,"url":"https://www.exploit-db.com/exploits/3383"}],"products":[{"vendor":"bell_labs","product":"plan_9"}],"references":[{"url":"http://www.securityfocus.com/bid/22749","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit"]},{"url":"https://www.exploit-db.com/exploits/3383","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"http://kernelspace.us/itheft.c","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"http://osvdb.org/34956","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://lists.immunitysec.com/pipermail/dailydave/2007-February/004118.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2007-1189"},{"url":"https://github.com/advisories/GHSA-4763-4594-fp9p"}],"sources":{"cve":[{"id":"CVE-2007-1189","description":"Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addresses with kernel memory via a large n argument, as demonstrated by (1) modifying the iseve function to gain privileges and (2) making the devpermcheck function grant unrestricted device permissions.","status":"published","published":"2007-03-02T19:00:00Z","modified":"2024-08-07T12:50:34.399Z","updated_at":"2026-11-02T13:33:41.472948Z"}],"euvd":[{"id":"EUVD-2007-1186","description":"Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addresses with kernel memory via a large n argument, as demonstrated by (1) modifying the iseve function to gain privileges and (2) making the devpermcheck function grant unrestricted device permissions.","status":"published","published":"2007-03-02T19:00:00Z","modified":"2024-08-07T12:50:34Z","updated_at":"2026-11-03T01:38:26.725267Z"}],"ghsa":[{"id":"GHSA-4763-4594-fp9p","title":"Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows...","description":"Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addresses with kernel memory via a large n argument, as demonstrated by (1) modifying the iseve function to gain privileges and (2) making the devpermcheck function grant unrestricted device permissions.","status":"published","published":"2022-05-01T17:51:16Z","modified":"2023-01-31T05:03:25Z","updated_at":"2026-11-02T14:48:27.875916Z"}],"nvd":[{"id":"CVE-2007-1189","description":"Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addresses with kernel memory via a large n argument, as demonstrated by (1) modifying the iseve function to gain privileges and (2) making the devpermcheck function grant unrestricted device permissions.","status":"published","published":"2007-03-02T21:18:00Z","modified":"2026-06-16T22:37:06.883Z","cvss":[{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:01:13.98711Z"}]}}