National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2007-4849 Detail

Description

JFFS2, as used on One Laptop Per Child (OLPC) build 542 and possibly other Linux systems, when POSIX ACL support is enabled, does not properly store permissions during (1) inode creation or (2) ACL setting, which might allow local users to access restricted files or directories after a remount of a filesystem, related to "legacy modes" and an inconsistency between dentry permissions and inode permissions.

Source:  MITRE      Last Modified:  09/12/2007

Quick Info

CVE Dictionary Entry:
CVE-2007-4849
Original release date:
09/12/2007
Last revised:
09/05/2008
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
4.4 MEDIUM
Vector:
(AV:L/AC:M/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore:
6.4
Exploitability Subscore:
3.4
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (10/10/2007)

Not vulnerable. There is no support for jffs2 in the Linux kernel as distributed with Red Hat Enterprise Linux 2.1 or 3. There is no ACL support for jffs2 in the Linux kernel as distributed with Red Hat Enterprise Linux 4 or 5.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource Type Source Name
http://dev.laptop.org/ticket/2732 External Source CONFIRM http://dev.laptop.org/ticket/2732
http://git.infradead.org/?p=mtd-2.6.git;a=commitdiff;h=9ed437c50d89eabae763dd422579f73fdebf288d External Source CONFIRM http://git.infradead.org/?p=mtd-2.6.git;a=commitdiff;h=9ed437c50d89eabae763dd422579f73fdebf288d
http://lists.infradead.org/pipermail/linux-mtd-cvs/2007-August/005897.html External Source MLIST [linux-mtd] 20070822 [JFFS2] Fix ACL vs. mode handling.
http://www.debian.org/security/2007/dsa-1378 External Source DEBIAN DSA-1378
http://www.securityfocus.com/bid/25838 External Source BID 25838
http://www.ubuntu.com/usn/usn-558-1 External Source UBUNTU USN-558-1
http://www.ubuntu.com/usn/usn-574-1 External Source UBUNTU USN-574-1

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (CWE-264)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:one_laptop_per_child:olpc_linux:build_542:*:*:*:*:*:*:*

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History 1 change record found - show changes