[Bugme-new] [Bug 16901] New: Security problem in the FTP URL for obtaining QLogic Fibre Channel HBA firmware
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Tue Aug 24 06:31:53 PDT 2010
https://bugzilla.kernel.org/show_bug.cgi?id=16901
Summary: Security problem in the FTP URL for obtaining QLogic
Fibre Channel HBA firmware
Product: SCSI Drivers
Version: 2.5
Kernel Version: 2.6.35.3
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: QLOGIC QLA2XXX
AssignedTo: scsi_drivers-qla2xxx at kernel-bugs.osdl.org
ReportedBy: plamen at tonev.net
Regression: No
Created an attachment (id=27801)
--> (https://bugzilla.kernel.org/attachment.cgi?id=27801)
Proof that firmware files can be replaces with malicious ones
The qla2xxx driver in the latest stable 2.6.35.3 prints dangerous URL
(ftp.qlogic.com) for obtaining new firmware for their adapters.
From: linux-2.6.35.3/drivers/scsi/qla2xxx/qla_init.c
---- quote -----
#define QLA_FW_URL "ftp://ftp.qlogic.com/outgoing/linux/firmware/"
int
qla2x00_load_risc(scsi_qla_host_t *vha, uint32_t *srisc_addr)
{
int rval;
int i, fragment;
uint16_t *wcode, *fwcode;
uint32_t risc_addr, risc_size, fwclen, wlen, *seg;
struct fw_blob *blob;
struct qla_hw_data *ha = vha->hw;
struct req_que *req = ha->req_q_map[0];
/* Load firmware blob. */
blob = qla2x00_request_firmware(vha);
if (!blob) {
qla_printk(KERN_ERR, ha, "Firmware image unavailable.\n");
qla_printk(KERN_ERR, ha, "Firmware images can be retrieved "
"from: " QLA_FW_URL ".\n");
return QLA_FUNCTION_FAILED;
}
---- end quote -----
It is dangerous to give the users this URL for obtaining new firmware images,
because this QLogic FTP site isn't secure at all and everyone anonymously can
exchange the original firmware .bin files with their own files.
The outgoing/linux/firmware folder is read-only and files cannot be replaced,
or created new ones. The folder itself cannot be renamed too, but everyone can
rename linux folder to linux2 for example, then create a new linux folder with
firmware inside and put their own files instead of the 'official' ones from
QLogic.
It can be done easy and you can see the attached screenshot for proof.
Until better security is implemented on this FTP (or better place for storing
firmware releases is found) I recommend to print a warning to all users of this
driver about security problems with the QLogic FTP site.
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