Vulnerability CVE-2010-1160
Published: 2010-04-16   Modified: 2012-02-13

Description:
GNU nano before 2.2.4 does not verify whether a file has been changed before it is overwritten in a file-save operation, which allows local user-assisted attackers to overwrite arbitrary files via a symlink attack on an attacker-owned file that is being edited by the victim.

Type:

CWE-59

 (Improper Link Resolution Before File Access ('Link Following'))

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
1.9/10
2.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
GNU -> NANO 

 References:
http://www.securitytracker.com/id?1023891
http://www.openwall.com/lists/oss-security/2010/04/14/4
http://svn.savannah.gnu.org/viewvc/trunk/nano/ChangeLog?revision=4503&root=nano&view=markup
http://secunia.com/advisories/39444
http://lists.gnu.org/archive/html/nano-devel/2010-04/msg00000.html
http://drosenbe.blogspot.com/2010/03/nano-as-root.html
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