CVE-2012-0920
Description
Use-after-free vulnerability in Dropbear SSH Server 0.52 through 2012.54, when command restriction and public key authentication are enabled, allows remote authenticated users to execute arbitrary code and bypass command restrictions via multiple crafted command requests, related to "channels concurrency."
Predictions
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
Debian Mixed 7 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2012.55-1 |
| sid | Fixed | 2012.55-1 |
| forky | Fixed | 2012.55-1 |
| bullseye | Fixed | 2012.55-1 |
| bookworm | Fixed | 2012.55-1 |
| 7.0 | Affected | — |
| 6.0 | Affected | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| dropbear_ssh_project | dropbear_ssh | {"startIncluding":"0.52","endIncluding":"2012.54"} | |
References
- http://matt.ucc.asn.au/dropbear/CHANGES
- http://secunia.com/advisories/48147
- http://secunia.com/advisories/48929
- http://www.debian.org/security/2012/dsa-2456
- http://www.osvdb.org/79590
- http://www.securityfocus.com/bid/52159
- https://exchange.xforce.ibmcloud.com/vulnerabilities/73444
- https://secure.ucc.asn.au/hg/dropbear/rev/818108bf7749
- https://www.mantor.org/~northox/misc/CVE-2012-0920.html
- https://security-tracker.debian.org/tracker/CVE-2012-0920
CWEs
CWE-399
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.