NULL pointer dereference in Proftpd
CVE-2019-19269
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Proftpd — versions 1.3.6
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 30, 31
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/proftpd/proftpd/issues/861 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/11/msg00039.html (mailing-list, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html (vendor-advisory)
- security.gentoo.org/glsa/202003-35 (vendor-advisory)
- www.oracle.com/security-alerts/cpuapr2020.html
Frequently asked questions
- What is CVE-2019-19269?
- CVE-2019-19269 is a medium-severity vulnerability in Proftpd, classified under NULL Pointer Dereference. CVSS score: 4.9/10. Published 2019-11-30.
- How severe is CVE-2019-19269?
- Medium severity. CVSS v3 base score is 4.9 out of 10.
- Is CVE-2019-19269 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.