Multiple vulnerabilities in IBM MQ



Published: 2018-11-22
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-0737
CVE-2018-0732
CWE-ID CWE-200
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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IBM MQ
Server applications / Other server solutions

Vendor IBM Corporation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU11854

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0737

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information on the target system.

The weakness exists in the RSA key generation algorithm's BN_mod_inverse() and BN_mod_exp_mont() functions due to a cache timing side channel attack. A local attacker can recover the private key.

Mitigation

Update to version 5.3.1.15.

Vulnerable software versions

IBM MQ: 5.3

External links

http://www-01.ibm.com/support/docview.wss?uid=ibm10739435&myns=swgws&mynp=OCSSYHRD&mync=E&cm_sp=swgws-_-OCSSYHRD-_-E


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.

Is there known malware, which exploits this vulnerability?

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

2) Improper input validation

EUVDB-ID: #VU13325

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0732

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to improper handling of large prime values by the affected software during key agreement operations in a Transport Layer Security (TLS) handshake using an Ephemeral Diffie-Hellman (DHE) based cipher suite. A remote attacker can send a large prime value from a malicious OpenSSL server to a targeted OpenSSL client and cause the client to stop responding while generating a key for the prime value.

Mitigation

Update to version 5.3.1.15.

Vulnerable software versions

IBM MQ: 5.3

External links

http://www-01.ibm.com/support/docview.wss?uid=ibm10739439&myns=swgws&mynp=OCSSYHRD&mync=E&cm_sp=swgws-_-OCSSYHRD-_-E


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.



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