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CVE-2019-19269

Good to know:

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Date: November 30, 2019

An issue was discovered in tls_verify_crl in ProFTPD through 1.3.6b. A dereference of a NULL pointer may occur. This pointer is returned by the OpenSSL sk_X509_REVOKED_value() function when encountering an empty CRL installed by a system administrator. The dereference occurs when validating the certificate of a client connecting to the server in a TLS client/server mutual-authentication setup.

Language: C

Severity Score

Related Resources (10)

https://github.com/proftpd/proftpd/issues/861
https://www.oracle.com/security-alerts/cpuapr2020.html
https://security.gentoo.org/glsa/202003-35
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QR65XUHPCRU3NXTSFVF2J4GWRIHC7AHW/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGBBCPLJSDPFG5EI5P5G7P4KEX7YSD5G/
https://nvd.nist.gov/vuln/detail/CVE-2019-19269
https://security-tracker.debian.org/tracker/CVE-2019-19269
https://lists.debian.org/debian-lts-announce/2019/11/msg00039.html
https://www.mend.io/vulnerability-database/CVE-2019-19269

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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