Vulnerability identifier: #VU21058

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5481

CWE-ID: CWE-415

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
cURL
Client/Desktop applications / Other client software

Vendor: curl.haxx.se

Description

The vulnerability allows a remote attacker to perform denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing very large blocks during Kerberos FTP data transfer. A remote attacker that controls malicious FTP server can send large blocks of data to the curl client, trigger a double-free error and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

cURL: 7.52.0 - 7.65.3

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External links
http://curl.haxx.se/docs/CVE-2019-5481.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.