Multiple vulnerabilities in IBM FlashSystem 840 and V840

1) Command injection

EUVDB-ID: #VU5295

Risk: Critical

CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2014-6271

CWE-ID: CWE-77 - Command injection

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary commands on the target system.

The vulnerability exists due to incorrect parsing of environment variables. A remote attacker can execute arbitrary code on the target system 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.

Successful exploitation may allow an attacker to gain complete control over vulnerable system.

Exploitation example:

env x='() { :;}; echo vulnerable' bash -c "echo this is a test"

Note: this vulnerability was being actively exploited in the wild.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FlashSystem V840 9846-AC0 & -AC1 and 9848-AC0 & -AC1: before 7.3.0.7

FlashSystem V840 9846-AE1 & 9848-AE1: before 1.1.2.7

FlashSystem 840 9840-AE1 & 9843-AE1: before 1.1.2.7

CPE2.3

External links

http://www.ibm.com/support/pages/node/690057

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

2) Command injection

EUVDB-ID: #VU5294

Risk: Critical

CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2014-7169

CWE-ID: CWE-77 - Command injection

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary commands on the target system.

The weakness exists due to an incomplete fix related to malformed function definitions in the values of environment variables. By using multiple attack vectors (DHCP, HTTP, SIP, FTP, and SMTP) involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, a remote attacker can inject and execute arbitrary commands.This vulnerability exists due to incomplete fix for vulnerability #1 (CVE-2014-6271).

Exploitation example:

env X='() { (a)=>\' bash -c "echo date"; cat echo

Successful exploitation may allow an attacker to gain complete control over vulnerable system.

Note: this vulnerability was being actively exploited.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FlashSystem V840 9846-AC0 & -AC1 and 9848-AC0 & -AC1: before 7.3.0.7

FlashSystem V840 9846-AE1 & 9848-AE1: before 1.1.2.7

FlashSystem 840 9840-AE1 & 9843-AE1: before 1.1.2.7

CPE2.3

External links

http://www.ibm.com/support/pages/node/690057

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

3) Memory corruption

EUVDB-ID: #VU5327

Risk: Critical

CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2014-7186

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to out-of-bounds memory access while handling multiple "<<EOF" declarations. A remote attacker can trigger memory corruption and execute arbitrary code.

Exploitation example:

bash -c 'true <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF' ||  echo "CVE-2014-7186 vulnerable, redir_stack"

Successful exploitation results in arbitrary code execution on the vulnerable system.

Note: this vulnerability was being actively exploited.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FlashSystem V840 9846-AC0 & -AC1 and 9848-AC0 & -AC1: before 7.3.0.7

FlashSystem V840 9846-AE1 & 9848-AE1: before 1.1.2.7

FlashSystem 840 9840-AE1 & 9843-AE1: before 1.1.2.7

CPE2.3

External links

http://www.ibm.com/support/pages/node/690057

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.

4) Off-by-one error

EUVDB-ID: #VU5328

Risk: Critical

CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2014-7187

CWE-ID: CWE-193 - Off-by-one Error

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to off-by-one-error when handling deeply nested flow control constructs. A remote attacker can trigger memory corruption and execute arbitrary code with privileges of the current user.

Exploitation example:

(for x in {1..200} ; do echo "for x$x in ; do :"; done; for x in {1..200} ; do echo done ; done) | bash ||
echo "CVE-2014-7187 vulnerable, word_lineno"

Successful exploitation results in arbitrary code execution on the vulnerable system.

Note: this vulnerability was being actively exploited.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FlashSystem V840 9846-AC0 & -AC1 and 9848-AC0 & -AC1: before 7.3.0.7

FlashSystem V840 9846-AE1 & 9848-AE1: before 1.1.2.7

FlashSystem 840 9840-AE1 & 9843-AE1: before 1.1.2.7

CPE2.3

External links

http://www.ibm.com/support/pages/node/690057

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.

5) Memory corruption

EUVDB-ID: #VU5310

Risk: Critical

CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2014-6277

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to incorrect parsing of environment variables. A remote attacker can trigger memory corruption and execute arbitrary code on the target system 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. The vulnerability was introduced by incorrect patching of vulnerabilities #1 (CVE-2014-6271) and #2 (CVE-2014-7169).

Successful exploitation results in arbitrary code execution on the vulnerable system.

Note: this vulnerability was being actively exploited in the wild.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FlashSystem V840 9846-AC0 & -AC1 and 9848-AC0 & -AC1: before 7.3.0.7

FlashSystem V840 9846-AE1 & 9848-AE1: before 1.1.2.7

FlashSystem 840 9840-AE1 & 9843-AE1: before 1.1.2.7

CPE2.3

External links

http://www.ibm.com/support/pages/node/690057

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.

6) Command injection

EUVDB-ID: #VU5322

Risk: Critical

CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2014-6278

CWE-ID: CWE-77 - Command injection

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to an incomplete fix related to the parsing of user scripts. By using attack vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, a remote attacker can execute arbitrary code with privileges of the current user. The vulnerability was introduced by incorrect patching of vulnerabilities #1 (CVE-2014-6271),  #2 (CVE-2014-7169) and #3 (CVE-2014-6277)

Successful exploitation results in arbitrary code execution on the vulnerable system.

Note: this vulnerability was being actively exploited.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FlashSystem V840 9846-AC0 & -AC1 and 9848-AC0 & -AC1: before 7.3.0.7

FlashSystem V840 9846-AE1 & 9848-AE1: before 1.1.2.7

FlashSystem 840 9840-AE1 & 9843-AE1: before 1.1.2.7

CPE2.3

External links

http://www.ibm.com/support/pages/node/690057

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.