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FreeBSD OPIE opiepasswd User Verification Vulnerability
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Secunia Advisory:
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SA19347
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Release Date:
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2006-03-23
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Popularity:
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7,283 views
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Critical:
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Less critical
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Impact:
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Security Bypass
Privilege escalation
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | FreeBSD 4.x
FreeBSD 5.x
FreeBSD 6.x
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| | CVE reference: | CVE-2006-1283
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Description:
A vulnerability has been reported in FreeBSD, which can be exploited by malicious, local users to gain escalated privileges or by malicious users to bypass certain security restrictions.
The vulnerability is caused due to the use of the "getlogin()" function by opiepasswd to identify the user it is running as. In certain cases, "getlogin()" may identify the user as "root" even when it is being run by an unprivileged user. This can exploited by an unprivileged user to configure OPIE authentication for the root user.
Note: The vulnerability can potentially be exploited remotely if the system is configured with a CGI script that calls opiepasswd.
The vulnerability has been reported in all FreeBSD versions.
Solution:
Update FreeBSD or apply patch.
Fixed versions:
2006-03-22 16:01:08 UTC (RELENG_6, 6.1-STABLE)
2006-03-22 16:01:38 UTC (RELENG_6_0, 6.0-RELEASE-p6)
2006-03-22 16:01:56 UTC (RELENG_5, 5.5-STABLE)
2006-03-22 16:02:17 UTC (RELENG_5_4, 5.4-RELEASE-p13)
2006-03-22 16:02:35 UTC (RELENG_5_3, 5.3-RELEASE-p28)
2006-03-22 16:02:49 UTC (RELENG_4, 4.11-STABLE)
2006-03-22 16:03:05 UTC (RELENG_4_11, 4.11-RELEASE-p16)
2006-03-22 16:03:25 UTC (RELENG_4_10, 4.10-RELEASE-p22)
Patch for FreeBSD 4.10, 4.11, 5.3, 5.4, and 6.0:
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-06:12/opie.patch
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-06:12/opie.patch.asc
Provided and/or discovered by:
The vendor credits Mykola Zubach.
Original Advisory:
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:12.opie.asc
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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15th Oct, 2008
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