CVE-2013-4421
medium
CVSS v3
—
CVSS v4 NEW
—
VIR risk
5.0
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 2012.55-1.4 |
| debian | bullseye | fixed | 2012.55-1.4 |
| debian | forky | fixed | 2012.55-1.4 |
| debian | sid | fixed | 2012.55-1.4 |
| debian | trixie | fixed | 2012.55-1.4 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| dropbear_ssh_project | dropbear_ssh | {"endExcluding":"2013.59"} | 2013.59 |
References
- 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://secunia.com/advisories/55173
- http://www.openwall.com/lists/oss-security/2013/10/11/4
- http://www.securityfocus.com/bid/62958
- https://matt.ucc.asn.au/dropbear/CHANGES
- https://secure.ucc.asn.au/hg/dropbear/rev/0bf76f54de6f
- https://support.citrix.com/article/CTX216642
- https://security-tracker.debian.org/tracker/CVE-2013-4421
CWEs
CWE-189
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.