Vulnerability CVE-2007-1859
Published: 2007-05-02   Modified: 2012-02-12

Description:
XScreenSaver 4.10, when using a remote directory service for credentials, does not properly handle the results from the getpwuid function in drivers/lock.c when there is no network connectivity, which causes XScreenSaver to crash and unlock the screen and allows local users to bypass authentication.

Type:

CWE-287

 (Improper Authentication)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.6/10
6.4/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Xscreensaver -> Xscreensaver 

 References:
http://www.redhat.com/support/errata/RHSA-2007-0322.html
https://issues.rpath.com/browse/RPL-1293
http://xforce.iss.net/xforce/xfdb/34054
http://www.ubuntu.com/usn/usn-474-1
http://www.securitytracker.com/id?1017996
http://www.securityfocus.com/bid/23783
http://www.novell.com/linux/security/advisories/2007_9_sr.html
http://www.mandriva.com/security/advisories?name=MDKSA-2007:097
http://security.gentoo.org/glsa/glsa-200705-14.xml
http://secunia.com/advisories/25610
http://secunia.com/advisories/25225
http://secunia.com/advisories/25119
http://secunia.com/advisories/25118
http://secunia.com/advisories/25116
http://secunia.com/advisories/25105
http://secunia.com/advisories/25065
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:11459
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