Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| One Laptop Per Child | Olpc Linux | build_542 |
Related Weaknesses (CWE)
References
- http://dev.laptop.org/ticket/2732
- http://git.infradead.org/?p=mtd-2.6.git%3Ba=commitdiff%3Bh=9ed437c50d89eabae763d
- http://lists.infradead.org/pipermail/linux-mtd-cvs/2007-August/005897.html
- http://secunia.com/advisories/26978
- http://secunia.com/advisories/28170
- http://secunia.com/advisories/28706
- http://www.debian.org/security/2007/dsa-1378
- http://www.securityfocus.com/bid/25838
- http://www.ubuntu.com/usn/usn-558-1
- http://www.ubuntu.com/usn/usn-574-1
- http://dev.laptop.org/ticket/2732
- http://git.infradead.org/?p=mtd-2.6.git%3Ba=commitdiff%3Bh=9ed437c50d89eabae763d
- http://lists.infradead.org/pipermail/linux-mtd-cvs/2007-August/005897.html
- http://secunia.com/advisories/26978
- http://secunia.com/advisories/28170
FAQ
What is CVE-2007-4849?
CVE-2007-4849 is a vulnerability with a CVSS score of 4.4 (MEDIUM). 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 se...
How severe is CVE-2007-4849?
CVE-2007-4849 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2007-4849?
Check the references section above for vendor advisories and patch information. Affected products include: One Laptop Per Child Olpc Linux.