Vulnerability CVE-2008-5394
Published: 2008-12-08   Modified: 2012-02-12

Description:
/bin/login in shadow 4.0.18.1 in Debian GNU/Linux, and probably other Linux distributions, allows local users in the utmp group to overwrite arbitrary files via a symlink attack on a temporary file referenced in a line (aka ut_line) field in a utmp entry.

See advisories in our WLB2 database:
Topic
Author
Date
High
/bin/login gives root to group utmp
Paul Szabo
02.12.2008

Type:

CWE-59

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

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Debian -> Shadow 

 References:
http://bugs.debian.org/332198
http://bugs.debian.org/505071
http://bugs.debian.org/505271
http://security.gentoo.org/glsa/glsa-200903-24.xml
http://securityreason.com/securityalert/4695
http://www.mandriva.com/security/advisories?name=MDVSA-2009:062
http://www.securityfocus.com/archive/1/498769/100/0/threaded
http://www.securityfocus.com/bid/32552
http://www.ubuntu.com/usn/usn-695-1
https://exchange.xforce.ibmcloud.com/vulnerabilities/47037
https://www.exploit-db.com/exploits/7313
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