CVE-2013-6890

denyhosts 2.6 uses an incorrect regular expression when analyzing authentication logs, which allows remote attackers to cause a denial of service (incorrect block of IP addresses) via crafted login names.

CVSS v2.0 5.0 MEDIUM

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://seclists.org/oss-sec/2013/q4/535
https://bugzilla.redhat.com/show_bug.cgi?id=1045982
http://secunia.com/advisories/56239	Vendor Advisory
http://www.debian.org/security/2013/dsa-2826

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:fedoraproject:fedora::::::::
	cpe:2.3:o:debian:debian_linux:7.0:::::::*
	cpe:2.3:o:debian:debian_linux:7.1:::::::*
	cpe:2.3:o:debian:debian_linux:6.0:::::::*

Configuration 2 (hide)

cpe:2.3:a:phil_schwartz:denyhosts:2.6:*:*:*:*:*:*:*

Information

Published : 2013-12-23 14:55

Updated : 2013-12-24 09:16

NVD link : CVE-2013-6890

Mitre link : CVE-2013-6890

JSON object : View

CWE

CWE-287

Improper Authentication

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Products Affected

debian

debian_linux

phil_schwartz

denyhosts

fedoraproject

fedora

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