U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2013-4421 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119300.html CVE, Inc., Red Hat Third Party Advisory 
http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119323.html CVE, Inc., Red Hat Third Party Advisory 
http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html CVE, Inc., Red Hat Third Party Advisory 
http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html CVE, Inc., Red Hat Third Party Advisory 
http://secunia.com/advisories/55173 CVE, Inc., Red Hat Third Party Advisory 
http://www.openwall.com/lists/oss-security/2013/10/11/4 CVE, Inc., Red Hat Mailing List  Third Party Advisory 
http://www.securityfocus.com/bid/62958 CVE, Inc., Red Hat Third Party Advisory  VDB Entry 
https://matt.ucc.asn.au/dropbear/CHANGES CVE, Inc., Red Hat Vendor Advisory 
https://secure.ucc.asn.au/hg/dropbear/rev/0bf76f54de6f CVE, Inc., Red Hat Patch  Third Party Advisory 
https://support.citrix.com/article/CTX216642 CVE, Inc., Red Hat Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-189 Numeric Errors cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2013-4421
NVD Published Date:
10/25/2013
NVD Last Modified:
04/10/2025
Source:
Red Hat, Inc.