Integer overflow in kbdint.c in mod_sftp in ProFTPD 1.3.4d and 1.3.5r3 allows remote attackers to cause a denial of service (memory consumption) via a large response count value in an authentication request, which triggers a large memory allocation.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Proftpd | Proftpd | 1.3.4-d (including) | 1.3.4-d (including) |
| Proftpd | Proftpd | 1.3.5-rc3 (including) | 1.3.5-rc3 (including) |
| Proftpd-dfsg | Ubuntu | lucid | * |
| Proftpd-dfsg | Ubuntu | precise | * |
| Proftpd-dfsg | Ubuntu | quantal | * |
| Proftpd-dfsg | Ubuntu | raring | * |
| Proftpd-dfsg | Ubuntu | saucy | * |
| Proftpd-dfsg | Ubuntu | upstream | * |
References
- http://bugs.proftpd.org/show_bug.cgi?id=3973
- http://kingcope.wordpress.com/2013/09/11/proftpd-mod_sftpmod_sftp_pam-invalid-pool-allocation-in-kbdint-authentication/
- http://lists.opensuse.org/opensuse-updates/2013-10/msg00032.html
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00020.html
- http://www.debian.org/security/2013/dsa-2767
- http://www.openwall.com/lists/oss-security/2013/09/17/6
- http://bugs.proftpd.org/show_bug.cgi?id=3973
- http://kingcope.wordpress.com/2013/09/11/proftpd-mod_sftpmod_sftp_pam-invalid-pool-allocation-in-kbdint-authentication/
- http://lists.opensuse.org/opensuse-updates/2013-10/msg00032.html
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00020.html
- http://www.debian.org/security/2013/dsa-2767
- http://www.openwall.com/lists/oss-security/2013/09/17/6