What is the severity of CVE-2013-4421?

CVE-2013-4421 has a severity rating of medium due to its potential to cause denial of service.

How do I fix CVE-2013-4421?

To fix CVE-2013-4421, upgrade to Dropbear SSH version 2013.59 or later.

What type of attack does CVE-2013-4421 enable?

CVE-2013-4421 enables a denial of service attack through excessive memory consumption by handling large compressed packets.

Which versions of Dropbear SSH are affected by CVE-2013-4421?

Dropbear SSH versions prior to 2013.59 are affected by CVE-2013-4421.

Is CVE-2013-4421 a remote vulnerability?

Yes, CVE-2013-4421 allows remote attackers to exploit the vulnerability.

Vulnerability/
CVE-2013-4421

medium

CWE

189

25/10/2013

6/8/2024

CVE-2013-4421

First published: Fri Oct 25 2013(Updated: )

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.

Credit: secalert@redhat.com

Affected Software	Affected Version	How to fix
Dropbear SSH	<2013.59

Remedy

https://secure.ucc.asn.au/hg/dropbear/rev/0bf76f54de6f

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of CVE-2013-4421?
CVE-2013-4421 has a severity rating of medium due to its potential to cause denial of service.
How do I fix CVE-2013-4421?
To fix CVE-2013-4421, upgrade to Dropbear SSH version 2013.59 or later.
What type of attack does CVE-2013-4421 enable?
CVE-2013-4421 enables a denial of service attack through excessive memory consumption by handling large compressed packets.
Which versions of Dropbear SSH are affected by CVE-2013-4421?
Dropbear SSH versions prior to 2013.59 are affected by CVE-2013-4421.
Is CVE-2013-4421 a remote vulnerability?
Yes, CVE-2013-4421 allows remote attackers to exploit the vulnerability.

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agent/last-modified-date
agent/severity
agent/event
agent/first-publish-date
agent/description
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collector/nvd-index
agent/software-canonical-lookup-request
vendor/dropbear ssh project
canonical/dropbear ssh

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Frequently Asked Questions

What is the severity of CVE-2013-4421?
CVE-2013-4421 has a severity rating of medium due to its potential to cause denial of service.
How do I fix CVE-2013-4421?
To fix CVE-2013-4421, upgrade to Dropbear SSH version 2013.59 or later.
What type of attack does CVE-2013-4421 enable?
CVE-2013-4421 enables a denial of service attack through excessive memory consumption by handling large compressed packets.
Which versions of Dropbear SSH are affected by CVE-2013-4421?
Dropbear SSH versions prior to 2013.59 are affected by CVE-2013-4421.
Is CVE-2013-4421 a remote vulnerability?
Yes, CVE-2013-4421 allows remote attackers to exploit the vulnerability.