Vulnerability Report

CVE-2017-1000099

Title: Haxx Libcurl Information Disclosure

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2017-1000099.

CWE Category CWE-200

Published Date Oct 05, 2017

Modified Date Jun 17, 2026

Exploit Status Not Found

Score 6.5 CVSS v3.0

Exploit Probability (EPSS)

3.08%

Vulnerability Summary

CVE-2017-1000099: When asking to get a file from a file:// URL, libcurl provides a feature that outputs meta-data about the file using HTTP-like headers. The code doing this would send the wrong buffer to the user (stdout or the application's provide callback), which could lead to other private data from the heap to get inadvertently displayed. The wrong buffer was an uninitialized memory area allocated on the heap and if it turned out to not contain any zero byte, it would continue and display the data following that buffer in memory.

Impacted Vendors

libcurl 1

haxx 1

Reference Links

http://www.securityfocus.com/bid/100281 http://www.securitytracker.com/id/1039119 https://curl.haxx.se/0809C.patch https://security.gentoo.org/glsa/201709-14 https://curl.haxx.se/docs/adv_20170809C.html http://www.securityfocus.com/bid/100281 http://www.securitytracker.com/id/1039119 https://curl.haxx.se/0809C.patch https://security.gentoo.org/glsa/201709-14

CVSS v3.0

Source Entity [email protected]

Severity MEDIUM

6.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.3

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns