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Information disclosure in cURL for Windows



Published: 2020-01-16
Severity Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-15601
CWE ID CWE-20
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
Subscribe
cURL
Client/Desktop applications / Other client software

Vendor curl.haxx.se

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Input validation error

Severity: Medium

CVSSv3: 5.2 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-15601

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: Yes [Search exploit]

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, 4.1, 4.2, 4.3, 4.4, 4.5, 4.5.1, 4.6, 4.7, 4.8, 4.8.1, 4.8.2, 4.8.3, 4.8.4, 4.9, 4.10, 5.0, 5.2, 5.2.1, 5.3, 5.4, 5.5, 5.5.1, 5.7, 5.7.1, 5.8, 5.9, 5.9.1, 5.10, 5.11, 6.0, 6.1, 6.1beta, 6.2, 6.3, 6.3.1, 6.4, 6.5, 6.5.1, 6.5.2, 7.1, 7.1.1, 7.2, 7.2.1, 7.3, 7.4, 7.4.1, 7.4.2, 7.5, 7.5.1, 7.5.2, 7.6, 7.6.1, 7.7, 7.7.1, 7.7.2, 7.7.3, 7.8, 7.8.1, 7.8.2, 7.9, 7.9.1, 7.9.2, 7.9.3, 7.9.4, 7.9.5, 7.9.6, 7.9.7, 7.9.8, 7.10, 7.10.1, 7.10.2, 7.10.3, 7.10.4, 7.10.5, 7.10.6, 7.10.7, 7.10.8, 7.11.0, 7.11.1, 7.11.2, 7.12, 7.12.0, 7.12.1, 7.12.2, 7.12.3, 7.13, 7.13.0, 7.13.1, 7.13.2, 7.14, 7.14.0, 7.14.1, 7.15, 7.15.0, 7.15.1, 7.15.2, 7.15.3, 7.15.4, 7.15.5, 7.16.0, 7.16.1, 7.16.2, 7.16.3, 7.16.4, 7.17, 7.17.0, 7.17.1, 7.18, 7.18.0, 7.18.1, 7.18.2, 7.19.0, 7.19.1, 7.19.2, 7.19.3, 7.19.4, 7.19.5, 7.19.6, 7.19.7, 7.20.0, 7.20.1, 7.21.0, 7.21.1, 7.21.2, 7.21.3, 7.21.4, 7.21.5, 7.21.6, 7.21.7, 7.22.0, 7.23.0, 7.23.1, 7.24.0, 7.25.0, 7.26.0, 7.27.0, 7.28.0, 7.28.1, 7.29.0, 7.30.0, 7.31.0, 7.32.0, 7.33.0, 7.34.0, 7.35.0, 7.36.0, 7.37.0, 7.37.1, 7.38.0, 7.39.0, 7.40.0, 7.41.0, 7.42.0, 7.42.1, 7.43.0, 7.44.0, 7.45.0, 7.46.0, 7.47.0, 7.47.1, 7.48.0, 7.49.0, 7.49.1, 7.50.0, 7.50.1, 7.50.2, 7.50.3, 7.51.0, 7.52.0, 7.52.1, 7.53.0, 7.53.1, 7.54.0, 7.54.1, 7.55.0, 7.55.1, 7.56.0, 7.56.1, 7.57.0, 7.58.0, 7.59.0, 7.60.0, 7.61.0, 7.61.1, 7.62.0, 7.63.0, 7.64.0, 7.64.1, 7.65.0, 7.65.1, 7.65.2, 7.65.3, 7.66.0, 7.67.0

CPE External links

https://hackerone.com/reports/726117
https://curl.haxx.se/docs/CVE-2019-15601.html

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.