ProFTPD up to 1.3.6b CRL tls_verify_crl certificate validation

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in ProFTPD up to 1.3.6b and classified as critical. Impacted is the function tls_verify_crl of the component CRL Handler. Such manipulation leads to certificate validation. This vulnerability is referenced as CVE-2019-19270. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in ProFTPD up to 1.3.6b (File Transfer Software). Affected by this issue is the function tls_verify_crl of the component CRL Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in tls_verify_crl in ProFTPD through 1.3.6b. Failure to check for the appropriate field of a CRL entry (checking twice for subject, rather than once for subject and once for issuer) prevents some valid CRLs from being taken into account, and can allow clients whose certificates have been revoked to proceed with a connection to the server.

The weakness was published 11/26/2019. This vulnerability is handled as CVE-2019-19270 since 11/26/2019. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1587.003.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-146362 and VDB-146361. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/26/2019 🔍
11/26/2019 +0 days 🔍
11/26/2019 +0 days 🔍
02/28/2024 +1555 days 🔍

Sourcesinfo

Product: github.com

Advisory: 859
Status: Not defined

CVE: CVE-2019-19270 (🔍)
GCVE (CVE): GCVE-0-2019-19270
GCVE (VulDB): GCVE-100-146360
See also: 🔍

Entryinfo

Created: 11/26/2019 14:06
Updated: 02/28/2024 09:27
Changes: 11/26/2019 14:06 (37), 11/26/2019 14:11 (18), 02/28/2024 09:24 (4), 02/28/2024 09:27 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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