Multiple vulnerabilities in IBM GCM16 & GCM32 and LCM8 & LCM16 KVM Switch Firmware
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2018-0732 CVE-2019-1559 |
| CWE-ID | CWE-20 CWE-327 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
GCM16 & GCM32 KVM Switch Firmware Hardware solutions / Firmware LCM8 & LCM16 KVM Switch Firmware Hardware solutions / Firmware |
| Vendor | IBM Corporation |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Improper input validation
EUVDB-ID: #VU13325
Risk: Low
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-0732
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsGCM16 & GCM32 KVM Switch Firmware: before 2.4.0.25463
LCM8 & LCM16 KVM Switch Firmware: before 1.2.50.00
CPE2.3- cpe:2.3:h:ibm_corporation:gcm16_and_gcm32_kvm_switch_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:lcm8_and_lcm16_kvm_switch_firmware:*:*:*:*:*:*:*:*
https://www.ibm.com/support/pages/node/1076943
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.
2) Use of a broken or risky cryptographic algorithm
EUVDB-ID: #VU17860
Risk: Low
CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2019-1559
CWE-ID:
CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to decrypt sensitive information.
The vulnerability exists due to the way an application behaves, when it receives a 0-byte record with invalid padding compared to the record with an invalid MAC, which results in padding oracle. A remote attacker can decrypt data.
Successful exploitation of the vulnerability requires that the application is using "non-stitched" ciphersuites and calls SSL_shutdown() twice (first, via a BAD_RECORD_MAC and again via a CLOSE_NOTIFY).Mitigation
Install update from vendor's website.
Vulnerable software versionsGCM16 & GCM32 KVM Switch Firmware: before 2.4.0.25463
LCM8 & LCM16 KVM Switch Firmware: before 1.2.50.00
CPE2.3- cpe:2.3:h:ibm_corporation:gcm16_and_gcm32_kvm_switch_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:lcm8_and_lcm16_kvm_switch_firmware:*:*:*:*:*:*:*:*
https://www.ibm.com/support/pages/node/1076943
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.
