CVE-2019-19272 : An issue was discovered in tls_verify_crl in ProFTPD before 1.3.6. Direct derefe

An issue was discovered in tls_verify_crl in ProFTPD before 1.3.6. Direct dereference of a NULL pointer (a variable initialized to NULL) leads to a crash when validating the certificate of a client connecting to the server in a TLS client/server mutual-authentication setup.

Published 2019-11-26 04:15:13

Updated 2019-12-11 16:16:55

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2019-19272

Proftpd » Proftpd
Versions before (<) 1.3.6
cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2019-19272

Top countries where our scanners detected CVE-2019-19272

Top open port discovered on systems with this issue 21

IPs affected by CVE-2019-19272 430,602

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2019-19272!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2019-19272

EPSS FAQ

0.42%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 59 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-19272

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-19272

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-19272

https://github.com/proftpd/proftpd/issues/858

DoS (nullptr dereference) 1/2 with CRLs in mod_tls of ProFTPD < 1.3.6 · Issue #858 · proftpd/proftpd · GitHub
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