Bash: Multiple vulnerabilities

Bash: Multiple vulnerabilities Two vulnerabilities have been found in Bash, the worst of which may allow execution of arbitrary code. bash October 20, 2012 October 20, 2012: 1 251319 431850 local 4.2_p37 4.2_p37

Bash is the standard GNU Bourne Again SHell.

Two vulnerabilities have been found in Bash:

Bash example scripts do not handle temporary files securely (CVE-2008-5374).
Improper bounds checking in Bash could cause a stack-based buffer overflow (CVE-2012-3410).

A remote attacker could entice a user to open a specially crafted Bash script, possibly resulting in execution of arbitrary code with the privileges of the process, or a Denial of Service condition of the Bash executable.

A local attacker may be able to perform symlink attacks to overwrite arbitrary files with the privileges of the user running the application or bypass shell access restrictions.

There is no known workaround at this time.

All Bash users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-shells/bash-4.2_p37"

CVE-2008-5374 CVE-2012-3410 underling ackle