CVE-2012-0920

Name: CVE-2012-0920
Creator: NVD / NIST
Published: 2012-06-05T22:55:09.437+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 6.49%

Last modified Jun 16, 2026

CVE-2012-0920 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 6.49% chance of exploitation in the next 30 days.

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."

Metrics

EPSS Probability

6.49%

92.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-399

Affected Software

Vendor	Product	Versions
Dropbear Ssh Project	Dropbear Ssh	>= 0.52, <= 2012.54
Debian	Debian Linux	6.0
Debian	Debian Linux	7.0

References

http://matt.ucc.asn.au/dropbear/CHANGESVendor Advisory
http://secunia.com/advisories/48147Third Party Advisory
http://secunia.com/advisories/48929Third Party Advisory
http://www.debian.org/security/2012/dsa-2456Third Party Advisory
http://www.osvdb.org/79590Broken Link
http://www.securityfocus.com/bid/52159Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/73444Third Party Advisory, VDB Entry
https://secure.ucc.asn.au/hg/dropbear/rev/818108bf7749Vendor Advisory
https://www.mantor.org/~northox/misc/CVE-2012-0920.htmlThird Party Advisory
http://matt.ucc.asn.au/dropbear/CHANGESVendor Advisory
http://secunia.com/advisories/48147Third Party Advisory
http://secunia.com/advisories/48929Third Party Advisory
http://www.debian.org/security/2012/dsa-2456Third Party Advisory
http://www.osvdb.org/79590Broken Link
http://www.securityfocus.com/bid/52159Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/73444Third Party Advisory, VDB Entry
https://secure.ucc.asn.au/hg/dropbear/rev/818108bf7749Vendor Advisory
https://www.mantor.org/~northox/misc/CVE-2012-0920.htmlThird Party Advisory

Timeline

Published: Jun 5, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-0920?

How severe is CVE-2012-0920?

Severity scoring for CVE-2012-0920 is pending analysis. The EPSS model estimates a 6.49% probability of exploitation in the next 30 days.

How do I fix CVE-2012-0920?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-0920?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST