FreeRADIUS cbtls_verify() buffer overflow
|freeradius-cbtlsverify-bo (78408)||High Risk|
FreeRADIUS is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the cbtls_verify() function. If the configuration uses TLS-based EAP methods, a remote attacker could overflow a buffer via an overly long "not after" timestamp in a client certificate to execute arbitrary code on the system or cause the application to crash.
Upgrade to the latest version of FreeRADIUS (2.2.0 or later), available from the FreeRADIUS Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
- Apple Web site: About the security content of OS X Server v3.0.
- FreeRADIUS Web site: FreeRADIUS: The world's most popular RADIUS Server.
- PRE-SA-2012-06: FreeRADIUS 2.1.10 - 2.1.12 remote code execution.
- BID-55483: FreeRADIUS Multiple Stack Based Buffer Overflow Vulnerabilities
- CVE-2012-3547: Stack-based buffer overflow in the cbtls_verify function in FreeRADIUS 2.1.10 through 2.1.12, when using TLS-based EAP methods, allows remote attackers to cause a denial of service (server crash) and possibly execute arbitrary code via a long not after timestamp in a client certificate.
- DSA-2546: freeradius -- stack-based buffer overflows
- OSVDB ID: 85325: FreeRADIUS cbtls_verify() Function Certificate not after Timestamp Field Parsing Remote Overflow
- RHSA-2012-1326: Moderate: freeradius security update
- RHSA-2012-1327: Moderate: freeradius2 security update
- SA50484: FreeRADIUS Client Certificate Verification Buffer Overflow Vulnerability
- Apple Mac OS X Mountain Lion 10.8
- Apple Mac OS X Mountain Lion 10.8.1
- Apple Mac OS X Mountain Lion 10.8.2
- Apple Mac OS X Mountain Lion 10.8.3
- Apple Mac OS X Mountain Lion 10.8.4
- Apple Mac OS X Mountain Lion 10.8.5
- Freeradius Freeradius 2.1.10
- FreeRADIUS FreeRADIUS 2.1.11
- FreeRADIUS FreeRADIUS 2.1.12
- RedHat Enterprise Linux 5 Client Workstation
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 6 Server
- RedHat Enterprise Linux 6 Workstation
Sep 10, 2012
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.