Multiple vulnerabilities in OpenSSL



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-0733
CVE-2018-0739
CWE-ID CWE-287
CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
 OpenSSL
Server applications / Encryption software

Vendor OpenSSL Software Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper authentication

EUVDB-ID: #VU11293

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-0733

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to modify potentially sensitive information on the target system.

Th weakness exists in the PA-RISC CRYPTO_memcmp function due to improper authentication. A remote attacker can write arbitrary data.

Mitigation

Update to version 1.1.0h.

Vulnerable software versions

OpenSSL: 1.1.0c - 1.1.0

CPE2.3 External links

https://www.openssl.org/news/secadv/20180327.txt


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) Resource exhaustion

EUVDB-ID: #VU11294

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-0739

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The weakness exists due to excessive stack memory consumption. A remote attacker can cause the service to crash.

Mitigation

Update to versions 1.1.0h or 1.0.2o.

Vulnerable software versions

OpenSSL: 1.0.2n - 1.1.0

CPE2.3 External links

https://www.openssl.org/news/secadv/20180327.txt


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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