FreeBSD ifconf function information disclosure
| freebsd-ifconf-information-disclosure (20114) |  Medium Risk |
Description:
FreeBSD could allow a local attacker to obtain sensitive information caused by a vulnerability in the ifcon() function when generating lists of network interfaces. A local attacker could exploit this vulnerability to obtain various sensitive information from previously cached kernel memory.
Platforms Affected:
- FreeBSD, FreeBSD 4.0 Alpha
- FreeBSD, FreeBSD 4.0
- FreeBSD, FreeBSD 4.1
- FreeBSD, FreeBSD 4.1.1
- FreeBSD, FreeBSD 4.10
- FreeBSD, FreeBSD 4.11
- FreeBSD, FreeBSD 4.2
- FreeBSD, FreeBSD 4.3
- FreeBSD, FreeBSD 4.4
- FreeBSD, FreeBSD 4.5
- FreeBSD, FreeBSD 4.6
- FreeBSD, FreeBSD 4.6.2
- FreeBSD, FreeBSD 4.7
- FreeBSD, FreeBSD 4.8
- FreeBSD, FreeBSD 4.9
- FreeBSD, FreeBSD 5.0
- FreeBSD, FreeBSD 5.0 Alpha
- FreeBSD, FreeBSD 5.1
- FreeBSD, FreeBSD 5.1 Alpha
- FreeBSD, FreeBSD 5.2
- FreeBSD, FreeBSD 5.2.1
- FreeBSD, FreeBSD 5.3
- FreeBSD, FreeBSD RELENG_4
- FreeBSD, FreeBSD RELENG_4_10
- FreeBSD, FreeBSD RELENG_4_3
- FreeBSD, FreeBSD RELENG_4_4
- FreeBSD, FreeBSD RELENG_4_8
- FreeBSD, FreeBSD RELENG_4_9
- FreeBSD, FreeBSD RELENG_5_2
Remedy:
Upgrade to the latest version of FreeBSD (RELENG_5, 5.4-STABLE, RELENG_5_4, 5.4-RELEASE-p2, RELENG_5_3, 5.3-RELEASE-p9, RELENG_4, 4.11-STABLE, RELENG_4_11, 4.11-RELEASE-p3, and RELENG_4_10 or 4.10-RELEASE-p8 or later dated after 2005-04-15 security branch), as listed in FreeBSD Security Advisory FreeBSD-SA-05:04.ifconf. See References.
— OR—
Apply the patch for this vulnerability, as listed in FreeBSD Security Advisory FreeBSD-SA-05:04.ifconf. See References.
Consequences:
Obtain Information
References:
- FreeBSD Security Advisory FreeBSD-SA-05:04.ifconf, Kernel memory disclosure in ifconf() at ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:04.ifconf.asc.
- BID-13191: FreeBSD Kernel SIOCGIFCONF Local Information Disclosure Vulnerability
- BID-15252: Apple Mac OS X Security Update 2005-10-31 Multiple Local Vulnerabilities
- CVE-2005-1126: The SIOCGIFCONF ioctl (ifconf function) in FreeBSD 4.x through 4.11 and 5.x through 5.4 does not properly clear a buffer before using it, which allows local users to obtain portions of sensitive kernel memory.
- OSVDB ID: 15514: FreeBSD ifconf() Function Kernel Memory Disclosure
- SA14959: FreeBSD "ifconf()" Function Kernel Memory Disclosure
- SA17368: Mac OS X Update Fixes Multiple Vulnerabilities
- VUPEN/ADV-2005-2256: Apple Security Update Fixes Multiple Mac OS X Vulnerabilities
Reported:
Apr 15, 2005
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For corrections or additions please email xforce@iss.net