Secunia Security Advisory - Some weaknesses have been reported in the Linux Kernel, which can be exploited by malicious, local users to disclose certain system information.
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Windows Applications Insecure Library Loading
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TITLE:
Linux Kernel Memory Leak Weaknesses
SECUNIA ADVISORY ID:
SA41440
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/41440/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=41440
RELEASE DATE:
2010-09-16
DISCUSS ADVISORY:
http://secunia.com/advisories/41440/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
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* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)
http://secunia.com/advisories/41440/
ONLY AVAILABLE IN CUSTOMER AREA:
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* Report Reliability
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https://ca.secunia.com/?page=viewadvisory&vuln_id=41440
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING
http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION:
Some weaknesses have been reported in the Linux Kernel, which can be
exploited by malicious, local users to disclose certain system
information.
1) The "de4x5_ioctl()" function in drivers/net/tulip/de4x5.c
incorrectly copies an uninitialised structure member to userspace,
which can be exploited to disclose kernel stack memory via the
DE4X5_GET_REG IOCTL.
2) The "cxgb_extension_ioctl()" function in
drivers/net/cxgb3/cxgb3_main.c, the " eql_g_master_cfg()" function in
drivers/net/eql.c, and the "hso_get_count()" function in
drivers/net/usb/hso.c are not properly initializing all members of
certain structures before copying them to userspace, which can be
exploited to disclose kernel stack memory by sending certain IOCTLs.
SOLUTION:
Restrict access to trusted users only.
PROVIDED AND/OR DISCOVERED BY:
Dan Rosenberg
ORIGINAL ADVISORY:
1) http://lkml.org/lkml/2010/9/14/317
2) http://lkml.org/lkml/2010/9/11/170
http://lkml.org/lkml/2010/9/11/168
http://lkml.org/lkml/2010/9/11/167
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
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