CVE-2015-3693 : Détail

CVE-2015-3693

4.21%V3
Network
2015-07-02
23h00 +00:00
2016-12-02
19h57 +00:00
CVE.org
NVD
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Descriptions du CVE

Apple Mac EFI before 2015-001, as used in OS X before 10.10.4 and other products, does not properly set refresh rates for DDR3 RAM, which might make it easier for remote attackers to conduct row-hammer attacks, and consequently gain privileges or cause a denial of service (memory corruption), by triggering certain patterns of access to memory locations.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-254 Category : 7PK - Security Features
Software security is not security software. Here we're concerned with topics like authentication, access control, confidentiality, cryptography, and privilege management.

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.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 36311

Date de publication : 2015-03-08 23h00 +00:00
Auteur : Google Security Research
EDB Vérifié : Yes

Sources: http://googleprojectzero.blogspot.ca/2015/03/exploiting-dram-rowhammer-bug-to-gain.html https://code.google.com/p/google-security-research/issues/detail?id=284 Full PoC: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/36311.tar.gz This is a proof-of-concept exploit that is able to escape from Native Client's x86-64 sandbox on machines that are susceptible to the DRAM "rowhammer" problem. It works by inducing a bit flip in read-only code so that the code is no longer safe, producing instruction sequences that wouldn't pass NaCl's x86-64 validator. Note that this uses the CLFLUSH instruction, so it doesn't work in newer versions of NaCl where this instruction is disallowed by the validator. There are two ways to test the exploit program without getting a real rowhammer-induced bit flip: * Unit testing: rowhammer_escape_test.c can be compiled and run as a Linux executable (instead of as a NaCl executable). In this case, it tests each possible bit flip in its code template, checking that each is handled correctly. * Testing inside NaCl: The patch "inject_bit_flip_for_testing.patch" modifies NaCl's dyncode_create() syscall to inject a bit flip for testing purposes. This syscall is NaCl's interface for loading code dynamically. Mark Seaborn [email protected] March 2015

Products Mentioned

Configuraton 0

Apple>>Mac_os_x >> Version To (including) 10.10.3

Références

http://www.securitytracker.com/id/1032755
Tags : vdb-entry, x_refsource_SECTRACK
http://support.apple.com/kb/HT204942
Tags : x_refsource_CONFIRM
http://www.securityfocus.com/bid/75495
Tags : vdb-entry, x_refsource_BID
http://www.securitytracker.com/id/1032444
Tags : vdb-entry, x_refsource_SECTRACK
http://support.apple.com/kb/HT204934
Tags : x_refsource_CONFIRM