High severity · published Nov 26, 2019
CVE-2019-19271
An issue was discovered in tls_verify_crl in ProFTPD before 1.3.6
7.5
CVSS
1.3%
EPSS
No
On KEV
Description
An issue was discovered in tls_verify_crl in ProFTPD before 1.3.6. A wrong iteration variable, used when checking a client certificate against CRL entries (installed by a system administrator), can cause some CRL entries to be ignored, and can allow clients whose certificates have been revoked to proceed with a connection to the server.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
Proftpd · Proftpd
before 1.3.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-19271
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-19271
Patch
https://github.com/proftpd/proftpd/issues/860
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