Vulnerability Details : CVE-2019-1549
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).
Products affected by CVE-2019-1549
- cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-1549
2.71%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-1549
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2019-1549
-
The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-1549
-
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be
git.openssl.org Git - openssl.git/commitdiffMailing List;Patch;Vendor Advisory
-
https://www.oracle.com/security-alerts/cpujan2020.html
Oracle Critical Patch Update Advisory - January 2020
-
https://www.oracle.com/security-alerts/cpuoct2020.html
Oracle Critical Patch Update Advisory - October 2020
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/
[SECURITY] Fedora 29 Update: openssl-1.1.1d-1.fc29 - package-announce - Fedora Mailing-Lists
-
https://www.oracle.com/security-alerts/cpuapr2020.html
Oracle Critical Patch Update Advisory - April 2020
-
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
Page not found | Oracle
-
https://www.oracle.com/security-alerts/cpujul2020.html
Oracle Critical Patch Update Advisory - July 2020
-
https://usn.ubuntu.com/4376-1/
USN-4376-1: OpenSSL vulnerabilities | Ubuntu security notices
-
https://support.f5.com/csp/article/K44070243
-
https://support.f5.com/csp/article/K44070243?utm_source=f5support&utm_medium=RSS
-
https://www.debian.org/security/2019/dsa-4539
Debian -- Security Information -- DSA-4539-1 openssl
-
https://seclists.org/bugtraq/2019/Oct/1
Bugtraq: [SECURITY] [DSA 4539-1] openssl security update
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/
[SECURITY] Fedora 30 Update: openssl-1.1.1d-1.fc30 - package-announce - Fedora Mailing-Lists
-
https://www.openssl.org/news/secadv/20190910.txt
Vendor Advisory
-
https://security.netapp.com/advisory/ntap-20190919-0002/
September 2019 OpenSSL Vulnerabilities in NetApp Products | NetApp Product Security
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