---------------------------------------------------------------------- Secure your corporate defenses and reduce complexity in handling vulnerability threats with the new Secunia Vulnerability Intelligence Manager (VIM) Beta. Join the beta: http://secunia.com/products/corporate/vim/ ---------------------------------------------------------------------- TITLE: Red Hat Certificate Server MD5 and SCEP Vulnerabilities SECUNIA ADVISORY ID: SA42181 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/42181/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=42181 RELEASE DATE: 2010-11-10 DISCUSS ADVISORY: http://secunia.com/advisories/42181/#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/42181/ 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=42181 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: Red Hat has acknowledged a security issue and some vulnerabilities in Red Hat Certificate System, which can be exploited by malicious people to conduct spoofing attacks and malicious users and malicious people to bypass certain security features. 1) The certificate authority does not properly restrict certain SCEP calls to authenticated registration authorities, which can be exploited to e.g. decrypt a sniffed one-time PIN. 2) The certificate authority does not properly prevent one-time PINs from being used multiple times in enrollment requests, which can be exploited to e.g. generate an unlimited amount of certificates. Successful exploitation requires a valid enrollment one-time PIN. 3) The certificate authority uses the MD5 cryptographic hash function to sign SCEP responses, which can be exploited to facilitate spoofing via collision attacks. SOLUTION: Updated packages are available via Red Hat Network. Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ PROVIDED AND/OR DISCOVERED BY: 1, 2) Reported by a Red Hat customer. 3) Reported by the vendor. ORIGINAL ADVISORY: RHSA-2010-0837: https://rhn.redhat.com/errata/RHSA-2010-0837.html RHSA-2010-0838: https://rhn.redhat.com/errata/RHSA-2010-0838.html OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ DEEP LINKS: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXPLOIT: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ ---------------------------------------------------------------------- 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 ----------------------------------------------------------------------