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FreeBSD "sppp" Buffer Overflow Vulnerability
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Secunia Advisory:
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SA21587
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Release Date:
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2006-08-24
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Last Update:
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2006-08-28
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Popularity:
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6,114 views
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Critical:
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Moderately critical
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Impact:
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Exposure of sensitive information
DoS
System access
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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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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| | CVE reference: | CVE-2006-4304
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Description:
A vulnerability has been reported in FreeBSD, which can be exploited by malicious people to cause a DoS (Denial of Service), gain knowledge about potentially sensitive information, and compromise a vulnerable system.
The vulnerability is caused due to boundary errors within the sppp driver when processing LCP (Link Control Protocol) options and can be exploited by sending specially crafted LCP packets.
The vulnerability has been reported for all FreeBSD releases.
Solution:
Update FreeBSD or apply patch.
Fixed versions:
2006-08-23 22:01:44 UTC (RELENG_6, 6.1-STABLE)
2006-08-23 22:02:25 UTC (RELENG_6_1, 6.1-RELEASE-p4)
2006-08-23 22:02:52 UTC (RELENG_6_0, 6.0-RELEASE-p10)
2006-08-23 22:03:55 UTC (RELENG_5, 5.5-STABLE)
2006-08-23 22:04:28 UTC (RELENG_5_5, 5.5-RELEASE-p3)
2006-08-23 22:04:58 UTC (RELENG_5_4, 5.4-RELEASE-p17)
2006-08-23 22:05:49 UTC (RELENG_5_3, 5.3-RELEASE-p32)
2006-08-23 22:06:08 UTC (RELENG_4, 4.11-STABLE)
2006-08-23 22:06:40 UTC (RELENG_4_11, 4.11-RELEASE-p20)
Patch for FreeBSD 4.x:
http://security.FreeBSD.org/patches/SA-06:18/ppp4x.patch
http://security.FreeBSD.org/patches/SA-06:18/ppp4x.patch.asc
Patch for FreeBSD 5.3:
http://security.FreeBSD.org/patches/SA-06:18/ppp53.patch
http://security.FreeBSD.org/patches/SA-06:18/ppp53.patch.asc
Patch for FreeBSD 5.4, 5.5, and 6.x:
http://security.FreeBSD.org/patches/SA-06:18/ppp.patch
http://security.FreeBSD.org/patches/SA-06:18/ppp.patch.asc
Provided and/or discovered by:
The vendor credits Martin Husemann and Pavel Cahyna.
Changelog:
2006-08-28: Updated name of affected driver.
Original Advisory:
http://security.freebsd.org/advisories/FreeBSD-SA-06:18.ppp.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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