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[ GLSA 201111-11 ] GNU Tar: User-assisted execution of arbitrary code
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PostPosted: Sun Nov 20, 2011 11:26 pm    Post subject: [ GLSA 201111-11 ] GNU Tar: User-assisted execution of arbit Reply with quote

Gentoo Linux Security Advisory

Title: GNU Tar: User-assisted execution of arbitrary code (GLSA 201111-11)
Severity: normal
Exploitable: remote
Date: November 20, 2011
Bug(s): #313333
ID: 201111-11

Synopsis

A buffer overflow flaw in GNU Tar could result in execution of
arbitrary code or a Denial of Service.


Background

GNU Tar is a utility to create archives as well as add and extract files
from archives.


Affected Packages

Package: app-arch/tar
Vulnerable: < 1.23
Unaffected: >= 1.23
Architectures: All supported architectures


Description

GNU Tar is vulnerable to a boundary error in the rmt_read__ function in
lib/rtapelib.c, which could cause a heap-based buffer overflow.


Impact

A remote attacker could entice the user to load a specially crafted
archive, possibly resulting in the execution of arbitrary code or a
Denial of Service.


Workaround

There is no known workaround at this time.

Resolution

All GNU Tar users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=app-arch/tar-1.23"
   
NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since July 18, 2010. It is likely that your system is already
no longer affected by this issue.


References

CVE-2010-0624
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