CVE-2013-6890

Description

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 12.96% Top 10%
Vendor Advisory debian.org Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/56239 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1045982
http://seclists.org/oss-sec/2013/q4/535 mailing list
http://www.debian.org/security/2013/dsa-2826 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2013-6890?
CVE-2013-6890 has been scored as a medium severity vulnerability.
How to fix CVE-2013-6890?
To fix CVE-2013-6890, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-6890 being actively exploited in the wild?
It is possible that CVE-2013-6890 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~13% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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