Search for vulnerabilities
Vulnerability details: VCID-g3jz-nf37-aaac
Vulnerability ID VCID-g3jz-nf37-aaac
Aliases CVE-2013-4421
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-189 Numeric Errors
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2013/CVE-2013-4421.html
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.03054 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07022 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07160 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07160 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07160 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.07160 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.19196 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
epss 0.25913 https://api.first.org/data/v1/epss?cve=CVE-2013-4421
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4421
cvssv3.1 5.9 https://matt.ucc.asn.au/dropbear/CHANGES
generic_textual MODERATE https://matt.ucc.asn.au/dropbear/CHANGES
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2013-4421
generic_textual Medium https://secure.ucc.asn.au/hg/dropbear/rev/0bf76f54de6f
Reference id Reference type URL
http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119300.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119323.html
http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html
http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html
http://people.canonical.com/~ubuntu-security/cve/2013/CVE-2013-4421.html
https://api.first.org/data/v1/epss?cve=CVE-2013-4421
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4421
http://secunia.com/advisories/55173
https://matt.ucc.asn.au/dropbear/CHANGES
https://secure.ucc.asn.au/hg/dropbear/rev/0bf76f54de6f
https://support.citrix.com/article/CTX216642
http://www.openwall.com/lists/oss-security/2013/10/11/4
http://www.securityfocus.com/bid/62958
726019 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=726019
cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:*
CVE-2013-4421 https://nvd.nist.gov/vuln/detail/CVE-2013-4421
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://matt.ucc.asn.au/dropbear/CHANGES
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2013-4421
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Exploit Prediction Scoring System (EPSS)
Percentile 0.85542
EPSS Score 0.03054
Published At April 4, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.