Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Proftpd | Proftpd | <= 1.3.5e |
| Fedoraproject | Fedora | 30 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
- https://github.com/proftpd/proftpd/issues/861PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00039.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202003-35
- https://www.oracle.com/security-alerts/cpuapr2020.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
- https://github.com/proftpd/proftpd/issues/861PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00039.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202003-35
- https://www.oracle.com/security-alerts/cpuapr2020.html
FAQ
What is CVE-2019-19269?
CVE-2019-19269 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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 encounteri...
How severe is CVE-2019-19269?
CVE-2019-19269 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-19269?
Check the references section above for vendor advisories and patch information. Affected products include: Proftpd Proftpd, Fedoraproject Fedora, Debian Debian Linux.