CVE-2013-4421
MEDIUM · CVSS 5.0EPSS 6.4%EU EUVD
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.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-189
- EPSS score
- 6.4% (94th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2013-4298)
- Published
- October 25, 2013
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2013-4298 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- dropbear ssh project / dropbear ssh
References
- http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119300.html(Third Party Advisory)
- http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119323.html(Third Party Advisory)
- http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html(Third Party Advisory)
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html(Third Party Advisory)
- http://secunia.com/advisories/55173(Third Party Advisory)
- http://www.openwall.com/lists/oss-security/2013/10/11/4(Mailing List, Third Party Advisory)
- http://www.securityfocus.com/bid/62958(Third Party Advisory, VDB Entry)
- https://matt.ucc.asn.au/dropbear/CHANGES(Vendor Advisory)
- https://secure.ucc.asn.au/hg/dropbear/rev/0bf76f54de6f(Patch, Third Party Advisory)
- https://support.citrix.com/article/CTX216642(Third Party Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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