Vulnerability in Dropbear SSH Project
CVE-2013-4421
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.064 (93.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.064 · newest: 0.064 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secunia.com/advisories/55173 (Third Party Advisory, third-party-advisory)
- matt.ucc.asn.au/dropbear/CHANGES (Vendor Advisory)
- secure.ucc.asn.au/hg/dropbear/rev/0bf76f54de6f (Patch, Third Party Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2013-October/119323.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-updates/2013-11/msg00046.html (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/62958 (VDB Entry, Third Party Advisory, vdb-entry)
- support.citrix.com/article/CTX216642 (Third Party Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2013-October/119300.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-updates/2013-10/msg00061.html (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2013/10/11/4 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2013-4421?
- CVE-2013-4421 is a vulnerability in Dropbear SSH Project, classified under CWE-189. Published 2013-10-25.
- Is CVE-2013-4421 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.