Multiple vulnerabilities in libssh2 component in F5 products
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Integer overflow
EUVDB-ID: #VU18023
Risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2019-3856
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow when parsing keyboard prompt requests. A remote attacker can trick the victim to connect to a malicious SSH server, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
BIG-IP SSLO: 12.1.0 - 16.0.0
BIG-IP PEM: 12.0.0 - 16.0.0
BIG-IP Link Controller: 12.0.0 - 16.0.0
BIG-IP GTM: 12.0.0 - 16.0.0
BIG-IP FPS: 12.0.0 - 16.0.0
BIG-IP DNS: 12.0.0 - 16.0.0
BIG-IP DDHD: 12.1.0 - 16.0.0
BIG-IP ASM: 12.0.0 - 16.0.0
BIG-IP APM: 12.0 HF1 - 16.0.0
BIG-IP Analytics: 12.0.0 - 16.0.0
BIG-IP AFM: 12.0.0 - 16.0.0
BIG-IP Advanced WAF: 12.1.0 - 16.0.0
BIG-IP AAM: 12.0.0 - 16.0.0
BIG-IP LTM: 12.0.0 - 16.0.0
BIG-IP: 12.0.0 - 16.0.0
BIG-IQ Centralized Management: 6.0.0 - 7.1.0
Traffix SDC: 5.0.0 - 5.1.0
External linkshttp://support.f5.com/csp/article/K90011301
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) Integer overflow
EUVDB-ID: #VU18025
Risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2019-3857
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow when parsing SSH_MSG_CHANNEL_REQUEST packets. A remote attacker can trick the victim to connect to a malicious SSH server, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
BIG-IP SSLO: 12.1.0 - 16.0.0
BIG-IP PEM: 12.0.0 - 16.0.0
BIG-IP Link Controller: 12.0.0 - 16.0.0
BIG-IP GTM: 12.0.0 - 16.0.0
BIG-IP FPS: 12.0.0 - 16.0.0
BIG-IP DNS: 12.0.0 - 16.0.0
BIG-IP DDHD: 12.1.0 - 16.0.0
BIG-IP ASM: 12.0.0 - 16.0.0
BIG-IP APM: 12.0 HF1 - 16.0.0
BIG-IP Analytics: 12.0.0 - 16.0.0
BIG-IP AFM: 12.0.0 - 16.0.0
BIG-IP Advanced WAF: 12.1.0 - 16.0.0
BIG-IP AAM: 12.0.0 - 16.0.0
BIG-IP LTM: 12.0.0 - 16.0.0
BIG-IP: 12.0.0 - 16.0.0
BIG-IQ Centralized Management: 6.0.0 - 7.1.0
Traffix SDC: 5.0.0 - 5.1.0
External linkshttp://support.f5.com/csp/article/K90011301
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.
3) Out-of-bounds write
EUVDB-ID: #VU18254
Risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2019-3863
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing total length of multiple keyboard interactive response messages that exceeds the value of unsigned char max characters. A remote attacker can trick the victim to connect to a malicious SSH server, trigger our of bounds write and execute arbitrary code on the system with privileges of the user, running the affected application.
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
BIG-IP SSLO: 12.1.0 - 16.0.0
BIG-IP PEM: 12.0.0 - 16.0.0
BIG-IP Link Controller: 12.0.0 - 16.0.0
BIG-IP GTM: 12.0.0 - 16.0.0
BIG-IP FPS: 12.0.0 - 16.0.0
BIG-IP DNS: 12.0.0 - 16.0.0
BIG-IP DDHD: 12.1.0 - 16.0.0
BIG-IP ASM: 12.0.0 - 16.0.0
BIG-IP APM: 12.0 HF1 - 16.0.0
BIG-IP Analytics: 12.0.0 - 16.0.0
BIG-IP AFM: 12.0.0 - 16.0.0
BIG-IP Advanced WAF: 12.1.0 - 16.0.0
BIG-IP AAM: 12.0.0 - 16.0.0
BIG-IP LTM: 12.0.0 - 16.0.0
BIG-IP: 12.0.0 - 16.0.0
BIG-IQ Centralized Management: 6.0.0 - 7.1.0
Traffix SDC: 5.0.0 - 5.1.0
External linkshttp://support.f5.com/csp/article/K90011301
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.
