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Vulnerability Details : CVE-2019-1547

Normally in OpenSSL EC groups always have a co-factor present and this is used in side channel resistant code paths. However, in some cases, it is possible to construct a group using explicit parameters (instead of using a named curve). In those cases it is possible that such a group does not have the cofactor present. This can occur even where all the parameters match a known named curve. If such a curve is used then OpenSSL falls back to non-side channel resistant code paths which may result in full key recovery during an ECDSA signature operation. In order to be vulnerable an attacker would have to have the ability to time the creation of a large number of signatures where explicit parameters with no co-factor present are in use by an application using libcrypto. For the avoidance of doubt libssl is not vulnerable because explicit parameters are never used. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).
Publish Date : 2019-09-10 Last Update Date : 2019-09-12
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- CVSS Scores & Vulnerability Types

CVSS Score
1.9
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 311

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:1840: openssl security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20201840 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-1547

# Product Type Vendor Product Version Update Edition Language
1 Application Openssl Openssl 1.0.2m Version Details Vulnerabilities
2 Application Openssl Openssl 1.0.2 Version Details Vulnerabilities
3 Application Openssl Openssl 1.0.2h Version Details Vulnerabilities
4 Application Openssl Openssl 1.0.2s Version Details Vulnerabilities
5 Application Openssl Openssl 1.0.2c Version Details Vulnerabilities
6 Application Openssl Openssl 1.0.2n Version Details Vulnerabilities
7 Application Openssl Openssl 1.0.2 Beta1 Version Details Vulnerabilities
8 Application Openssl Openssl 1.0.2i Version Details Vulnerabilities
9 Application Openssl Openssl 1.0.2d Version Details Vulnerabilities
10 Application Openssl Openssl 1.0.2o Version Details Vulnerabilities
11 Application Openssl Openssl 1.0.2 Beta2 Version Details Vulnerabilities
12 Application Openssl Openssl 1.0.2j Version Details Vulnerabilities
13 Application Openssl Openssl 1.0.2e Version Details Vulnerabilities
14 Application Openssl Openssl 1.0.2p Version Details Vulnerabilities
15 Application Openssl Openssl 1.0.2 Beta3 Version Details Vulnerabilities
16 Application Openssl Openssl 1.0.2k Version Details Vulnerabilities
17 Application Openssl Openssl 1.0.2f Version Details Vulnerabilities
18 Application Openssl Openssl 1.0.2q Version Details Vulnerabilities
19 Application Openssl Openssl 1.0.2a Version Details Vulnerabilities
20 Application Openssl Openssl 1.0.2l Version Details Vulnerabilities
21 Application Openssl Openssl 1.0.2g Version Details Vulnerabilities
22 Application Openssl Openssl 1.0.2r Version Details Vulnerabilities
23 Application Openssl Openssl 1.0.2b Version Details Vulnerabilities
24 Application Openssl Openssl 1.1.0c Version Details Vulnerabilities
25 Application Openssl Openssl 1.1.0 Pre4 Version Details Vulnerabilities
26 Application Openssl Openssl 1.1.0i Version Details Vulnerabilities
27 Application Openssl Openssl 1.1.0d Version Details Vulnerabilities
28 Application Openssl Openssl 1.1.0 Pre5 Version Details Vulnerabilities
29 Application Openssl Openssl 1.1.0 Version Details Vulnerabilities
30 Application Openssl Openssl 1.1.0j Version Details Vulnerabilities
31 Application Openssl Openssl 1.1.0e Version Details Vulnerabilities
32 Application Openssl Openssl 1.1.0 Pre6 Version Details Vulnerabilities
33 Application Openssl Openssl 1.1.0 - Version Details Vulnerabilities
34 Application Openssl Openssl 1.1.0k Version Details Vulnerabilities
35 Application Openssl Openssl 1.1.0f Version Details Vulnerabilities
36 Application Openssl Openssl 1.1.0a Version Details Vulnerabilities
37 Application Openssl Openssl 1.1.0 Pre1 Version Details Vulnerabilities
38 Application Openssl Openssl 1.1.0g Version Details Vulnerabilities
39 Application Openssl Openssl 1.1.0b Version Details Vulnerabilities
40 Application Openssl Openssl 1.1.0 Pre2 Version Details Vulnerabilities
41 Application Openssl Openssl 1.1.0 Pre3 Version Details Vulnerabilities
42 Application Openssl Openssl 1.1.0h Version Details Vulnerabilities
43 Application Openssl Openssl 1.1.1 Pre7 Version Details Vulnerabilities
44 Application Openssl Openssl 1.1.1 Pre2 Version Details Vulnerabilities
45 Application Openssl Openssl 1.1.1 Pre8 Version Details Vulnerabilities
46 Application Openssl Openssl 1.1.1 Pre3 Version Details Vulnerabilities
47 Application Openssl Openssl 1.1.1 Pre9 Version Details Vulnerabilities
48 Application Openssl Openssl 1.1.1 Pre4 Version Details Vulnerabilities
49 Application Openssl Openssl 1.1.1a Version Details Vulnerabilities
50 Application Openssl Openssl 1.1.1 Pre5 Version Details Vulnerabilities
51 Application Openssl Openssl 1.1.1 Version Details Vulnerabilities
52 Application Openssl Openssl 1.1.1b Version Details Vulnerabilities
53 Application Openssl Openssl 1.1.1 Pre6 Version Details Vulnerabilities
54 Application Openssl Openssl 1.1.1 Pre1 Version Details Vulnerabilities
55 Application Openssl Openssl 1.1.1c Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Openssl Openssl 55

- References For CVE-2019-1547

http://packetstormsecurity.com/files/154467/Slackware-Security-Advisory-openssl-Updates.html
https://arxiv.org/abs/1909.01785
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=21c856b75d81eff61aa63b4f036bb64a85bf6d46 CONFIRM
https://security.netapp.com/advisory/ntap-20190919-0002/ CONFIRM
https://seclists.org/bugtraq/2019/Sep/25
BUGTRAQ 20190912 [slackware-security] openssl (SSA:2019-254-03)
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=7c1709c2da5414f5b6133d00a03fc8c5bf996c7a CONFIRM
https://www.openssl.org/news/secadv/20190910.txt CONFIRM
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=30c22fa8b1d840036b8e203585738df62a03cec8 CONFIRM

- Metasploit Modules Related To CVE-2019-1547

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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