---------------------------------------------------------------------- The Secunia CSI 5.0 Beta - now available for testing Find out more, take a free test drive, and share your opinion with us: http://secunia.com/blog/242 ---------------------------------------------------------------------- TITLE: BusyBox "unpack_Z_stream()" Buffer Underflow Vulnerability SECUNIA ADVISORY ID: SA45702 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/45702/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=45702 RELEASE DATE: 2011-08-19 DISCUSS ADVISORY: http://secunia.com/advisories/45702/#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/45702/ 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=45702 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: A vulnerability has been reported in BusyBox, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a user's system. The vulnerability is caused due to a boundary error within the "unpack_Z_stream()" function (archival/libarchive/decompress_uncompress.c) and can be exploited to cause a buffer underflow via a specially crafted datastream. This is related to: SA21427 The vulnerability is reported in version 1.18.5. Other versions may also be affected. SOLUTION: Fixed in the GIT repository. Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ PROVIDED AND/OR DISCOVERED BY: Originally reported in ncompress by Tavis Ormandy. ORIGINAL ADVISORY: http://git.busybox.net/busybox/diff/archival/libarchive/decompress_uncompress.c?id=251fc70e9722f931eec23a34030d05ba5f747b0e 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 ----------------------------------------------------------------------