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CVE-2010-2023

Published: 7 June 2010

transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's file.

Notes

AuthorNote
mdeslaur
not default configuration

Priority

Low

Status

Package Release Status
exim4
Launchpad, Ubuntu, Debian
dapper
Released (4.60-3ubuntu3.3)
hardy
Released (4.69-2ubuntu0.3)
jaunty Ignored
(end of life)
karmic
Released (4.69-11ubuntu4.2)
lucid
Released (4.71-3ubuntu1.1)
maverick
Released (4.72-1ubuntu1)
upstream
Released (4.72)
Patches:
upstream: http://vcs.exim.org/viewvc/exim/exim-src/src/transports/appendfile.c?r1=1.24&r2=1.25
upstream: http://git.exim.org/exim.git/commit/a466095c0f9c7f48b1c9f857b5a17cab69fecd28