Dropbear Ssh
CVE-2013-4421
MEDIUM
Severity by source
AV:N/AC:L/Au:N/C:N/I:N/A:P
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
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. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 25.9%.
Technical ContextAI
This vulnerability is classified under CWE-189. 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. Affected products include: Dropbear Ssh Project Dropbear Ssh. Version information: before 2013.59.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Same weakness CWE-189 – Numeric Errors
View allSame technique Denial Of Service
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External POC / Exploit Code
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