#VU24338 Input validation error in cURL - CVE-2019-15601

Vulnerability identifier: #VU24338

Vulnerability risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2019-15601

CWE-ID: CWE-20

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 gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied URL. A remote attacker can pass  URL to the SMB share using the "file://" URI handler and read arbitrary files from local resources.

Example: file://localhost//hostname/home/secret.txt

Note, this issue affects Windows installations only.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

cURL: 4.0 - 7.67.0

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External links
https://hackerone.com/reports/726117
https://curl.haxx.se/docs/CVE-2019-15601.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. However, proof of concept for this vulnerability is available.