Linux Kernel proc_do_xprt buffer overflow
| linux-kernel-procdoxprt-bo (45136) |  High Risk |
Description:
Linux Kernel is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the proc_do_xprt function. By sending a specially-crafted read system call for the /proc/sys/sunrpc/transports file, a local attacker could overflow a buffer and execute arbitrary code on the system.
*CVSS:
| Base Score: | 4.6 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 3.7 |
| Exploitability: | Unproven |
| Remediation Level: | Unavailable |
| Report Confidence: | Uncorroborated |
Consequences:
Gain Access
Remedy:
Apply the appropriate patch for your system. See References.
References:
- Linux kernel GIT Repository: sunrpc: fix possible overrun on read of /proc/sys/sunrpc/transports.
- LKML.ORG Mailing List, Sat, 30 Aug 2008 20:20:24 +0000 (UTC): Re: buffer overflow in /proc/sys/sunrpc/transports.
- LKML.ORG Mailing List, Sat, 30 Aug 2008 20:44:22 +0200: buffer overflow in /proc/sys/sunrpc/transports.
- oss-security Mailing List, Thu, 04 Sep 2008 13:43:11 +0800: CVE request: kernel: sunrpc: fix possible overrun on read of /proc/sys/sunrpc/transports .
- The Linux Kernel Archives Web site: The Linux Kernel Archives.
- BID-31937: Linux Kernel 'proc_do_xprt()' Local Buffer Overflow Vulnerability
- CVE-2008-3911: The proc_do_xprt function in net/sunrpc/sysctl.c in the Linux kernel 2.6.26.3 does not check the length of a certain buffer obtained from userspace, which allows local users to overflow a stack-based buffer and have unspecified other impact via a crafted read system call for the /proc/sys/sunrpc/transports file.
- SUSE-SA:2008:053: Linux kernel security update
Platforms Affected:
- Linux Kernel 2.6.26.3
- Novell OpenSUSE 11.0
Reported:
Aug 30, 2008
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.