---------------------------------------------------------------------- Become a PSI 3.0 beta tester! Test-drive the new beta version and tell us what you think about its extended automatic update function and significantly enhanced user-interface. Download it here! http://secunia.com/psi_30_beta_launch ---------------------------------------------------------------------- TITLE: Dropbear SSH Server Use-After-Free Vulnerability SECUNIA ADVISORY ID: SA48147 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/48147/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=48147 RELEASE DATE: 2012-02-27 DISCUSS ADVISORY: http://secunia.com/advisories/48147/#comments AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s) http://secunia.com/advisories/48147/ ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS https://ca.secunia.com/?page=viewadvisory&vuln_id=48147 ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/ DESCRIPTION: Danny Fullerton has reported a vulnerability in Dropbear SSH Server, which can be exploited by malicious users to gain escalated privileges. The vulnerability is caused due to a use-after-free error within the daemon when managing certain channels concurrency and can be exploited by sending multiple command requests. Successful exploitation may allow execution of arbitrary code with root privileges, but requires the server to be configured for public key authentication and the "command" option to be used within the "authorized_keys" file. The vulnerability is reported in version 0.52 through 2011.54. SOLUTION: Update to version 2012.55 PROVIDED AND/OR DISCOVERED BY: Danny Fullerton, Mantor Organization ORIGINAL ADVISORY: Dropbear: http://matt.ucc.asn.au/dropbear/CHANGES Danny Fullerton: http://archives.neohapsis.com/archives/fulldisclosure/2012-02/0404.html OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ DEEP LINKS: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ EXPLOIT: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/advisories/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ----------------------------------------------------------------------