Privilege escalation in IBM DB2



Risk Low
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2018-1544
CVE-2018-1565
CVE-2018-1488
CVE-2018-1515
CVE-2018-1459
CWE-ID CWE-120
CWE-121
Exploitation vector Local
Public exploit Public exploit code for vulnerability #5 is available.
Vulnerable software
 IBM DB2
Server applications / Database software

Vendor IBM Corporation

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU13002

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2018-1544

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to buffer overflow in db2exmig and db2exfm. A local attacker can trigger memory corruption and escalate privileges to the DB2 instance owner to execute arbitrary code with root privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM DB2: 9.7.0.0 - 11.1.0.0

CPE2.3 External links

https://www-01.ibm.com/support/docview.wss?uid=swg22016143


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Buffer overflow

EUVDB-ID: #VU13003

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2018-1565

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to buffer overflow in db2exmig and db2exfm. A local attacker can trigger memory corruption and escalate privileges to the DB2 instance owner to execute arbitrary code with root privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM DB2: 9.7.0.0 - 11.1.0.0

CPE2.3
External links

https://www-01.ibm.com/support/docview.wss?uid=swg22016143


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Buffer overflow

EUVDB-ID: #VU13004

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2018-1488

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to buffer overflow in db2licm. A local attacker can trigger memory corruption and escalate privileges to the DB2 instance owner to execute arbitrary code with root privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM DB2: 10.5.0.0 - 11.1.0.0

CPE2.3
External links

https://www-01.ibm.com/support/docview.wss?uid=swg22016141


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Buffer overflow

EUVDB-ID: #VU13005

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2018-1515

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to buffer overflow in db2convert. A local attacker can trigger memory corruption and escalate privileges to the DB2 instance owner to execute arbitrary code with root privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM DB2: 10.5.0.0 - 11.1.0.0

CPE2.3
External links

https://www-01.ibm.com/support/docview.wss?uid=swg22016140


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Stack-based buffer overflow

EUVDB-ID: #VU13006

Risk: Low

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/U:Clear]

CVE-ID: CVE-2018-1459

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: Yes

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to stack based buffer overflow in Db2's rah.exe. A local attacker can trigger memory corruption and escalate privileges to the DB2 instance owner to execute arbitrary code with root privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM DB2: 10.5.0.0 - 11.1.0.0

CPE2.3
External links

https://www-01.ibm.com/support/docview.wss?uid=swg22016142


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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