Skip to content
Fencer Vulns
high 7.2

CVE-2007-1189 json

Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addr…

published 2007-03-02 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-1186

cvss
7.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
1
Exploit-DB

Summary

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.

Timeline

  1. First public exploit (EDB-3383)
  2. Published

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-3383 Plan 9 Kernel - 'devenv.c OTRUNC/pwrite' Local Privilege Escalation local, 2007-02-28
  • securityfocus.com http://www.securityfocus.com/bid/22749 referenced PoC, tagged "exploit" by a source, unverified
  • kernelspace.us http://kernelspace.us/itheft.c referenced PoC, tagged "exploit" by a source, unverified
  • lists.immunitysec.com http://lists.immunitysec.com/pipermail/dailydave/2007-February/004118.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.