IRIX rpcbind Symlink Vulnerability

BID:5889

Info

IRIX rpcbind Symlink Vulnerability

Bugtraq ID: 5889
Class: Access Validation Error
CVE: CVE-2002-1516
Remote: No
Local: Yes
Published: Oct 04 2002 12:00AM
Updated: Jul 11 2009 05:06PM
Credit: This issue was reported in an SGI security advisory.
Vulnerable: SGI IRIX 6.5.17 m
SGI IRIX 6.5.17
SGI IRIX 6.5.16 m
SGI IRIX 6.5.16
SGI IRIX 6.5.15 m
SGI IRIX 6.5.15
SGI IRIX 6.5.14 m
SGI IRIX 6.5.14
SGI IRIX 6.5.13 m
SGI IRIX 6.5.13
SGI IRIX 6.5.12
SGI IRIX 6.5.11
SGI IRIX 6.5.10
SGI IRIX 6.5.9
SGI IRIX 6.5.8
SGI IRIX 6.5.7
SGI IRIX 6.5.6
SGI IRIX 6.5.5
SGI IRIX 6.5.4
SGI IRIX 6.5.3
SGI IRIX 6.5.2
SGI IRIX 6.5.1
SGI IRIX 6.5
Not Vulnerable: SGI IRIX 6.5.18

Discussion

IRIX rpcbind Symlink Vulnerability

A vulnerability has been discovered in the rpcbind utility available on IRIX operating systems.

When starting rpcbind with the '-w' switch, the program attempts to locate a registered services list located in files in the /tmp directory. These files are written to when the rpcbind process receives a SIGINT or SIGTERM signal. Since rpcbind incorrectly follows symbolic links, this may possibly result in arbitrary files being corrupted/overwritten when a SIGINT or SIGTERM signal is received by rpcbind.

Critical files which are writeable by the rpcbind process may be corrupted, resulting in a denial of service.

It should be noted that rpcbind is included in the 'eoe.sw.svr4net' package, which is not installed by default.

Exploit / POC

IRIX rpcbind Symlink Vulnerability

No exploit is required.

Solution / Fix

IRIX rpcbind Symlink Vulnerability

Solution:
SGI has released an updated advisory explaining that the patches in the original advisory are incompatible with R4000-class hardware. patch4820 and patch4819 are the correct patches.

It has been reported by SGI that patches previously released were not compatible with eachother. A new advisory containing working fixes has been released. Further details regarding this change can be found in the referenced advisory. Users of versions without available patches are advised to upgrade to IRIX 6.5.18 or later.


SGI IRIX 6.5

SGI IRIX 6.5.1

SGI IRIX 6.5.10

SGI IRIX 6.5.11

SGI IRIX 6.5.12

SGI IRIX 6.5.13 m

SGI IRIX 6.5.13

SGI IRIX 6.5.14

SGI IRIX 6.5.14 m

SGI IRIX 6.5.15 m

SGI IRIX 6.5.15

SGI IRIX 6.5.16 m

SGI IRIX 6.5.16

SGI IRIX 6.5.17

SGI IRIX 6.5.17 m

SGI IRIX 6.5.2

SGI IRIX 6.5.3

SGI IRIX 6.5.4

SGI IRIX 6.5.5

SGI IRIX 6.5.6

SGI IRIX 6.5.7

SGI IRIX 6.5.8

SGI IRIX 6.5.9

References

IRIX rpcbind Symlink Vulnerability

References:

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