CVE-2009-1935: Integer Overflow
First published: Thu Jun 18 2009(Updated: )
Integer overflow in the pipe_build_write_buffer function (sys/kern/sys_pipe.c) in the direct write optimization feature in the pipe implementation in FreeBSD 7.1 through 7.2 and 6.3 through 6.4 allows local users to bypass virtual-to-physical address lookups and read sensitive information in memory pages via unspecified vectors.
Credit: secteam@freebsd.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD Kernel | =6.4 | |
| FreeBSD Kernel | =6.3 | |
| FreeBSD Kernel | =6.3_releng | |
| FreeBSD Kernel | =7.1-release-p2 | |
| FreeBSD Kernel | =7.1-rc1 | |
| FreeBSD Kernel | =7.1-release-p1 | |
| FreeBSD Kernel | =7.1-stable | |
| FreeBSD Kernel | =6.4-stable | |
| FreeBSD Kernel | =6.4-release_p4 | |
| FreeBSD Kernel | =7.2-pre-release | |
| FreeBSD Kernel | =7.1 | |
| FreeBSD Kernel | =7.2 | |
| FreeBSD Kernel | =6.3-release_p10 | |
| FreeBSD Kernel | =7.1-pre-release | |
| FreeBSD Kernel | =7.1-release-p5 |
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Reference Links
- http://security.freebsd.org/advisories/FreeBSD-SA-09:09.pipe.asc
- http://security.freebsd.org/patches/SA-09:09/pipe.patch
- http://osvdb.org/55044
- http://www.securitytracker.com/id?1022365
- http://secunia.com/advisories/35398
- http://www.securityfocus.com/bid/35279
- https://exchange.xforce.ibmcloud.com/vulnerabilities/51109
Frequently Asked Questions
What is the severity of CVE-2009-1935?
CVE-2009-1935 is considered to have a medium severity level due to its potential to allow local users to read sensitive information in memory.
How do I fix CVE-2009-1935?
To fix CVE-2009-1935, you should update your FreeBSD system to the latest version that addresses this vulnerability.
What versions of FreeBSD are affected by CVE-2009-1935?
CVE-2009-1935 affects FreeBSD versions 6.3 through 6.4 and 7.1 through 7.2.
Can CVE-2009-1935 be exploited remotely?
CVE-2009-1935 cannot be exploited remotely as it requires local access to the system.
What is the nature of the vulnerability in CVE-2009-1935?
CVE-2009-1935 is an integer overflow vulnerability in the pipe_build_write_buffer function.
- agent/author
- agent/weakness
- agent/type
- agent/severity
- agent/references
- agent/description
- agent/event
- agent/last-modified-date
- agent/remedy
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/nvd-historical
- agent/software-canonical-lookup-request
- collector/nvd-index
- vendor/freebsd
- canonical/freebsd kernel
- version/freebsd kernel/6.4
- version/freebsd kernel/6.3
- version/freebsd kernel/6.3_releng
- version/freebsd kernel/7.1-release-p2
- version/freebsd kernel/7.1-rc1
- version/freebsd kernel/7.1-release-p1
- version/freebsd kernel/7.1-stable
- version/freebsd kernel/6.4-stable
- version/freebsd kernel/6.4-release_p4
- version/freebsd kernel/7.2-pre-release
- version/freebsd kernel/7.1
- version/freebsd kernel/7.2
- version/freebsd kernel/6.3-release_p10
- version/freebsd kernel/7.1-pre-release
- version/freebsd kernel/7.1-release-p5