The do_coredump function in fs/exec.c in the Linux kernel 2.6.19 sets the flag variable to O_EXCL but does not use it, which allows context-dependent attackers to modify arbitrary files via a rewrite attack during a core dump.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | 2.6.19 (including) | 2.6.19 (including) |
| Red Hat Enterprise Linux 5 | RedHat | kernel-0:2.6.18-164.11.1.el5 | * |
References
- http://secunia.com/advisories/23349
- http://support.avaya.com/css/P8/documents/100073666
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19.1
- http://www.securityfocus.com/bid/21591
- http://www.trustix.org/errata/2006/0074/
- http://www.vupen.com/english/advisories/2006/5002
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10797
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7446
- https://rhn.redhat.com/errata/RHSA-2010-0046.html
- https://rhn.redhat.com/errata/RHSA-2010-0095.html
- http://secunia.com/advisories/23349
- http://support.avaya.com/css/P8/documents/100073666
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19.1
- http://www.securityfocus.com/bid/21591
- http://www.trustix.org/errata/2006/0074/
- http://www.vupen.com/english/advisories/2006/5002
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10797
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7446
- https://rhn.redhat.com/errata/RHSA-2010-0046.html
- https://rhn.redhat.com/errata/RHSA-2010-0095.html