#VU21044 Protection Mechanism Failure in OpenSSL - CVE-2019-1549

Vulnerability identifier: #VU21044

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-1549

CWE-ID: CWE-693

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software

Vendor: OpenSSL Software Foundation

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to OpenSSL does not use by default a rewritten random number generator (RNG) in the event of a fork() system call, resulting in the child and parent processes share the same RNG state.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenSSL: 1.1.1c - 1.1.1

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External links
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be
https://www.openssl.org/news/secadv/20190910.txt

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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.