CVE-2018-1000007 Information

Description

libcurl 7.1 through 7.57.0 might accidentally leak authentication data to third parties. When asked to send custom headers in its HTTP requests libcurl will send that set of headers first to the host in the initial URL but also if asked to follow redirects and a 30X HTTP response code is returned to the host mentioned in URL in the Location: response header value. Sending the same set of headers to subsequent hosts is in particular a problem for applications that pass on custom Authorization: headers as this header often contains privacy sensitive information or data that could allow others to impersonate the libcurl-using client’s request.

CVSS Vector

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

Reference

http://www.securitytracker.com/id/1040274 https://access.redhat.com/errata/RHBA-2019:0327 https://access.redhat.com/errata/RHSA-2018:3157 https://access.redhat.com/errata/RHSA-2018:3558 https://access.redhat.com/errata/RHSA-2019:1543 https://access.redhat.com/errata/RHSA-2020:0544 https://access.redhat.com/errata/RHSA-2020:0594 https://curl.haxx.se/docs/adv_2018-b3bf.html https://curl.haxx.se/docs/adv_2018-b3bf.html https://lists.debian.org/debian-lts-announce/2018/01/msg00038.html [debian-lts-announce] 20180129 [SECURITY] [DLA 1263-1] curl security update https://usn.ubuntu.com/3554-1/ https://usn.ubuntu.com/3554-2/ https://www.debian.org/security/2018/dsa-4098 https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html libcurl 7.1 through 7.57.0 might accidentally leak authentication data to third parties. When asked to send custom headers in its HTTP requests libcurl will send that set of headers first to the host in the initial URL but also if asked to follow redirects and a 30X HTTP response code is returned to the host mentioned in URL in the Location: response header value. Sending the same set of headers to subsequent hosts is in particular a problem for applications that pass on custom Authorization: headers as this header often contains privacy sensitive information or data that could allow others to impersonate the libcurl-using client’s request. cpe:2.3:a:haxx:curl::::::::

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8