Oracle third party patch update : bash_2014_10_07

This script is Copyright (C) 2014-2017 Tenable Network Security, Inc.


Synopsis :

The remote Solaris system is missing a security patch for third party
software.

Description :

The remote Solaris system is missing necessary patches to address
critical security updates related to 'Shellshock' :

- GNU Bash through 4.3 processes trailing strings after
function definitions in the values of environment
variables, which allows remote attackers to execute
arbitrary code via a crafted environment, as
demonstrated by vectors involving the ForceCommand
feature in OpenSSH sshd, the 'mod_cgi' and 'mod_cgid'
modules in the Apache HTTP Server, scripts executed by
unspecified DHCP clients, and other situations in which
setting the environment occurs across a privilege
boundary from Bash execution, also known as
'Shellshock.' Note that the original fix for this issue
was incorrect; CVE-2014-7169 has been assigned to cover
the vulnerability that is still present after the
incorrect fix. (CVE-2014-6271)

- GNU Bash through 4.3 bash43-026 does not properly parse
function definitions in the values of environment
variables, which allows remote attackers to execute
arbitrary code or cause a denial of service
(uninitialized memory access, and untrusted-pointer
read and write operations) via a crafted environment,
as demonstrated by vectors involving the ForceCommand
feature in OpenSSH sshd, the 'mod_cgi' and 'mod_cgid'
modules in the Apache HTTP Server, scripts executed by
unspecified DHCP clients, and other situations in which
setting the environment occurs across a privilege
boundary from Bash execution. Note that this
vulnerability exists because of an incomplete fix for
CVE-2014-6271 and CVE-2014-7169. (CVE-2014-6277)

- GNU Bash through 4.3 bash43-026 does not properly parse
function definitions in the values of environment
variables, which allows remote attackers to execute
arbitrary commands via a crafted environment, as
demonstrated by vectors involving the ForceCommand
feature in OpenSSH sshd, the 'mod_cgi' and 'mod_cgid'
modules in the Apache HTTP Server, scripts executed by
unspecified DHCP clients, and other situations in which
setting the environment occurs across a privilege
boundary from Bash execution. Note that this
vulnerability exists because of an incomplete fix for
CVE-2014-6271, CVE-2014-7169, and CVE-2014-6277.
(CVE-2014-6278)

- GNU Bash through 4.3 bash43-025 processes trailing
strings after certain malformed function definitions in
the values of environment variables, which allows remote
attackers to write to files or possibly have other
unknown impact via a crafted environment, as
demonstrated by vectors involving the ForceCommand
feature in OpenSSH sshd, the 'mod_cgi' and 'mod_cgid'
modules in the Apache HTTP Server, scripts executed by
unspecified DHCP clients, and other situations in which
setting the environment occurs across a privilege
boundary from Bash execution. Note that this
vulnerability exists because of an incomplete fix for
CVE-2014-6271. (CVE-2014-7169)

- The redirection implementation in 'parse.y' in GNU Bash
through 4.3 bash43-026 allows remote attackers to cause
a denial of service (out-of-bounds array access and
application crash) or possibly have other unspecified
impact via crafted use of 'here' documents, also known
as the 'redir_stack' issue. (CVE-2014-7186)

- An off-by-one error in the 'read_token_word' function in
'parse.y' in GNU Bash through 4.3 bash43-026 allows
remote attackers to cause a denial of service
(out-of-bounds array access and application crash) or
possibly have other unspecified impact via deeply
nested for-loops, also known as the 'word_lineno' issue.
(CVE-2014-7187)

See also :

http://www.nessus.org/u?b5f8def1
https://getupdates.oracle.com/readme/149080-02
http://seclists.org/oss-sec/2014/q3/650
http://www.nessus.org/u?dacf7829
https://www.invisiblethreat.ca/2014/09/cve-2014-6271/
https://blogs.oracle.com/patch/entry/solaris_idrs_available_on_mos

Solution :

Upgrade the Solaris system to version SRU 11.2.2.8.0.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 9.0
(CVSS2#E:POC/RL:ND/RC:ND)
Public Exploit Available : true

Family: Solaris Local Security Checks

Nessus Plugin ID: 78395 ()

Bugtraq ID: 70103
70137
70152
70154
70165
70166

CVE ID: CVE-2014-6271
CVE-2014-6277
CVE-2014-6278
CVE-2014-7169
CVE-2014-7186
CVE-2014-7187

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