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HP-UX Portable File System "pfs_mountd.rpc" Buffer Overflow Vulnerability
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Secunia Advisory:
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SA24855
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Release Date:
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2007-04-11
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Last Update:
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2007-04-18
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Popularity:
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7,470 views
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From local network
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Solution Status:
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Vendor Workaround
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| OS: | HP-UX 11.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| | CVE reference: | CVE-2007-1993
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Description:
A vulnerability has been reported in HP-UX, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to a boundary error within "pfs_mountd.rpc" daemon when handling certain UDP packets. This can be exploited to cause a buffer overflow by sending two specially crafted UDP packets to the daemon.
Successful exploitation allows execution of arbitrary code.
The vulnerability is reported in versions HP-UX B.11.00 (obsolete), B.11.11 and B.11.23.
NOTE: PFS is reportedly obsolete since 2004-03-01 and no longer supported on any HP-UX release, but is supplied with HP-UX B.11.00, B.11.11, and B.11.23.
Solution:
Use the enhanced CDFS and mount/umount commands by applying the patches. The vendor also recommends discontinuing the use of PFS.
HP-UX B.11.00:
Install PHKL_28060, PHKL_26450, PHCO_26449 or subsequent, discontinue use of PFS.
HP-UX B.11.11:
Install PHKL_28025, PHKL_26269, PHCO_25841 or subsequent, discontinue use of PFS.
HP-UX B.11.23:
Discontinue use of PFS.
Provided and/or discovered by:
iDefense Labs
Changelog:
2007-04-13: Updated advisory and modified "Criticality" and "Impact" sections based on information from iDefense Labs.
2007-04-18: Added CVE reference.
Original Advisory:
HPSBUX02203 SSRT071339:
https://www5.itrc.hp.com/service/cki/...88056779+28353475&docId=c00913684
iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=512
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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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