CVE-2013-4421

Description

The buf_decompress function in packet.c in Dropbear SSH Server before 2013.59 allows remote attackers to cause a denial of service (memory consumption) via a compressed packet that has a large size when it is decompressed.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 25.91% Top 5%
Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory asn.au
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/55173 third party advisory
https://matt.ucc.asn.au/dropbear/CHANGES vendor advisory
https://secure.ucc.asn.au/hg/dropbear/rev/0bf76f54de6f third party advisory patch
http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119323.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html third party advisory vendor advisory
http://www.securityfocus.com/bid/62958 vdb entry third party advisory
https://support.citrix.com/article/CTX216642 third party advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119300.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2013/10/11/4 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2013-4421?
CVE-2013-4421 has been scored as a medium severity vulnerability.
How to fix CVE-2013-4421?
To fix CVE-2013-4421, 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-2013-4421 being actively exploited in the wild?
It is possible that CVE-2013-4421 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~26% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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