CVE-2015-5754 : Détail

CVE-2015-5754

0.67%V3
Network
2015-08-16
21h00 +00:00
2017-09-20
07h57 +00:00
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Descriptions du CVE

Race condition in runner in Install.framework in the Install Framework Legacy component in Apple OS X before 10.10.5 allows attackers to execute arbitrary code in a privileged context via a crafted app that leverages incorrect privilege dropping associated with a locking error.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 9.3 AV:N/AC:M/Au:N/C:C/I:C/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.

Informations sur l'Exploit

Exploit Database EDB-ID : 38136

Date de publication : 2015-09-09 22h00 +00:00
Auteur : Google Security Research
EDB Vérifié : Yes

Source: https://code.google.com/p/google-security-research/issues/detail?id=478 The Install.framework runner suid root binary does not correctly account for the fact that Distributed Objects can be connected to by multiple clients at the same time. By connecting two proxy objects to an IFInstallRunner and calling [IFInstallRunner makeReceiptDirAt:asRoot:] in the first and passing a custom object as the directory name we can get a callback to our code just after the makeReceiptDirAt code has called seteuid(0);setguid(0) to regain privs. Since BSD priviledges are per-process this means that our other proxy object will now have euid 0 without having to provide an authorization reference. In this second proxy we can then just call runTaskSecurely and get a root shell before returning from the first proxy's callback function which will then drop privs. build using the provided makefile and run passing the full path to the localhost shell Proof of Concept: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/38136.zip

Products Mentioned

Configuraton 0

Apple>>Mac_os_x >> Version To (including) 10.10.4

Références

http://www.securityfocus.com/bid/76340
Tags : vdb-entry, x_refsource_BID
https://support.apple.com/kb/HT205031
Tags : x_refsource_CONFIRM
https://www.exploit-db.com/exploits/38136/
Tags : exploit, x_refsource_EXPLOIT-DB
http://www.securitytracker.com/id/1033276
Tags : vdb-entry, x_refsource_SECTRACK