CVE-2018-1000007

Publication date 24 January 2018

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
curl	17.10 artful	Fixed 7.55.1-1ubuntu2.3
	16.04 LTS xenial	Fixed 7.47.0-1ubuntu2.6
	14.04 LTS trusty	Fixed 7.35.0-1ubuntu2.14

Notes

leosilva

for precise some files that patch the code are not present

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
curl	Other: af32cd3

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H