Members
  • Total Members: 12818
  • Latest: martin
Stats
  • Total Posts: 28534
  • Total Topics: 8240
  • Online Today: 1027
  • Online Ever: 51419
  • (01. January 2010., 10:27:49)












Author Topic: Intel warns over bare-metal BIOS bug (SMM - System Management Mode)  (Read 1560 times)

0 Members and 1 Guest are viewing this topic.

Samker

  • SCF Administrator
  • *****
  • Posts: 7206
  • KARMA: 291
  • Gender: Male
  • Whatever doesn't kill us makes us stronger.
    • SCforum.info - Samker's Computer Forum


Set bug panic meters to 'important'.

Intel has warned that some of its motherboards contain a flaw in their BIOS setup that creates a privilege escalation vulnerability.

As a result of the security bug, users already logged in as administrators could change code running in System Management Mode. SMM is a privileged operating environment that operates outside of operating system control, creating a possible mechanism (at least in theory) for mounting rootkit-style attacks on vulnerable systems.

Exploiting the bug would probably require physical access to affected systems, a fair amount of skill and not a little luck in locating a vulnerable box.

Desktop and server systems are both potentially affected by the bug, described by Intel as "important", so the flaw still merits close attention.

BIOS updates designed to mitigate against attack are available for vulnerable Intel motherboards, as explained in an advisory by the chip giant issued on Wednesday: http://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00018&languageid=en-fr&cid=rss-172465-c1-236761

Intel lists the following desktop motherboards as potentially vulnerable: D5400XS, DX58SO, DX48BT2, DX38BT, DP45SG, DQ45CB, DQ45EK, DQ43AP, DB43LD, DG41MJ, DG41RQ, DG41TY, DG45ID, DG45FC, DG43NB, DP43TF, DQ35JO, DQ35MP, DG33BU, DG33FB, DG33TL, DP35DP, D945GSEJT, D945GCLF, D945GCLF2.

Intel Server Boards in the S3000, S3200, S5000 series, S5400 series, and S5500 series also need a BIOS update.

BIOS-related security flaws are rare but not unprecedented. The latest bug was discovered by researchers from Invisible Things Lab. Last year, the same researchers detailed a high-privilege rootkit vulnerability in Xen hypervisor that Intel addressed via a Bios update.

Invisible Things is due to present new research on attacking Intel BIOS at this week's Black Hat conference in Las Vegas, which is likely to be dominated by a detailed dissection of the issues arising from Intel's latest BIOS security advisory.

(The Register)

Samker's Computer Forum - SCforum.info





 

With Quick-Reply you can write a post when viewing a topic without loading a new page. You can still use bulletin board code and smileys as you would in a normal post.

Name: Email:
Verification:
Type the letters shown in the picture
Listen to the letters / Request another image
Type the letters shown in the picture:
Second Anti-Bot trap, type or simply copy-paste below (only the red letters):www.scforum.info:

Enter your email address to receive daily email with 'SCforum.info - Samker's Computer Forum' newest content:

Terms of Use | Privacy Policy | Advertising