CVE-2012-0920
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.49%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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."
- CVSS 2.0
- 7.1 HIGHAV:N/AC:H/Au:S/C:C/I:C/A:C
- EPSS
- 6.49% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- dropbear ssh project/dropbear ssh · debian/debian linux
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.