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

Freely subscribe to our NEWSLETTER

Newsletter FR

Newsletter EN

Vulnérabilités

Unsubscribe

Vigil@nce - Linux kernel: memory corruption via asn1_find_indefinite_length

July 2016 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

An attacker can generate a memory corruption in
asn1_find_indefinite_length() on the Linux kernel, in order to
trigger a denial of service, and possibly to run code.

 Impacted products: Fedora, Linux, openSUSE Leap, RHEL, SUSE Linux
Enterprise Desktop, SLES, Ubuntu.
 Severity: 2/4.
 Creation date: 12/05/2016.

DESCRIPTION OF THE VULNERABILITY

The Linux kernel implements an ASN.1 library in the
lib/asn1_decoder.c file, used for example to decode X.509
certificates.

An ASN.1 field can have an undefined size, and in this case the
asn1_find_indefinite_length() function is called to find the size.
However, the computation is wrong, and then the memory is
corrupted.

An attacker can therefore generate a memory corruption in
asn1_find_indefinite_length() on the Linux kernel, in order to
trigger a denial of service, and possibly to run code.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/Linux-kernel-memory-corruption-via-asn1-find-indefinite-length-19607


See previous articles

    

See next articles


Your podcast Here

New, you can have your Podcast here. Contact us for more information ask:
Marc Brami
Phone: +33 1 40 92 05 55
Mail: ipsimp@free.fr

All new podcasts