CVE-2019-1549

Description

OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).

Risk Information

Base Score

5.3

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Score

Exploitation Probability

3.64

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2019-1563,CVE-2019-1549,CVE-2019-1547,CVE-2019-1552 are fixed in OpenSSL (x64) 1.1.1d	Windows
Multiple Vulnerabilities are affected in IBM Cognos Analytics 11.0	Windows
Multiple Vulnerabilities are affected in IBM Cognos Analytics 11.1	Windows
openssl security update(DSA-4539-1) openssl_1.1.0l-1~deb9u1_i386.deb	Linux
openssl security update(DSA-4539-1) openssl_1.1.0l-1~deb9u1_amd64.deb	Linux
openssl security update(DSA-4539-1) openssl_1.1.1d-0+deb10u1_amd64.deb	Linux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4376-1) libssl1.1_1.1.1c-1ubuntu4.1_i386.deb	Linux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4376-1) libssl1.1_1.1.1c-1ubuntu4.1_amd64.deb	Linux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4376-1) libssl1.1_1.1.1-1ubuntu2.1~18.04.6_i386.deb	Linux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4376-1) libssl1.1_1.1.1-1ubuntu2.1~18.04.6_amd64.deb	Linux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4376-1) libssl1.0.0_1.0.2g-1ubuntu4.16_i386.deb	Linux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4376-1) libssl1.0.0_1.0.2g-1ubuntu4.16_amd64.deb	Linux
Use of Insufficiently Random Values Vulnerability (CVE-2019-1549)	NCM

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234