Vulnerability CVE-2007-4849
Published: 2007-09-12   Modified: 2012-02-12

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.

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:L/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.4/10
6.4/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
One laptop per child -> Olpc linux 

 References:
http://lists.infradead.org/pipermail/linux-mtd-cvs/2007-August/005897.html
http://git.infradead.org/?p=mtd-2.6.git;a=commitdiff;h=9ed437c50d89eabae763dd422579f73fdebf288d
http://dev.laptop.org/ticket/2732
http://www.ubuntu.com/usn/usn-574-1
http://www.ubuntu.com/usn/usn-558-1
http://www.securityfocus.com/bid/25838
http://www.debian.org/security/2007/dsa-1378
http://secunia.com/advisories/28706
http://secunia.com/advisories/28170
http://secunia.com/advisories/26978
Copyright 2024, cxsecurity.com

 

Back to Top