Rechercher
Contactez-nous Suivez-nous sur Twitter En francais English Language
 

De la Théorie à la pratique





















Freely subscribe to our NEWSLETTER

Newsletter FR

Newsletter EN

Vulnérabilités

Unsubscribe

Vigil@nce: Linux kernel, memory corruption of vDSO

November 2008 by Vigil@nce

SYNTHESIS

A local attacker can create a memory corruption in vDSO in order to generate a denial of service or to elevate his privileges.

Gravity: 2/4

Consequences: administrator access/rights, denial of service of computer

Provenance: user shell

Means of attack: no proof of concept, no attack

Ability of attacker: expert (4/4)

Confidence: confirmed by the editor (5/5)

Diffusion of the vulnerable configuration: high (3/3)

Creation date: 04/11/2008

IMPACTED PRODUCTS

- Linux kernel
- Red Hat Enterprise Linux

DESCRIPTION

The vDSO (Virtual Dynamic Shared Objects) page configures system calls for user processes.

The arch/i386/kernel/sysenter.c file implements vDSO. However, the syscall_nopage() function does not check received parameters.

A local attacker can therefore corrupt the memory in order to generate a denial of service or to elevate his privileges.

CHARACTERISTICS

Identifiers: 460251, BID-32099, CVE-2008-3527, RHSA-2008:0957-02, VIGILANCE-VUL-8219

http://vigilance.fr/vulnerability/8219




See previous articles

    

See next articles