CVE-2018-1000007

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.

9.8

CVSS

Severity: Critical

CVSS 3.1 •

CVSS 2.0 •

EPSS 3.07% Top 15%

Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory haxx.se

Affected: n/a n/a

References

Link	Tags
https://usn.ubuntu.com/3554-2/	third party advisory vendor advisory
https://usn.ubuntu.com/3554-1/	third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:3558	third party advisory vendor advisory
https://www.debian.org/security/2018/dsa-4098	third party advisory vendor advisory
https://curl.haxx.se/docs/adv_2018-b3bf.html	patch vendor advisory
http://www.securitytracker.com/id/1040274	vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2018:3157	third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/01/msg00038.html	third party advisory mailing list
https://access.redhat.com/errata/RHBA-2019:0327	third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:1543	third party advisory vendor advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html	third party advisory patch
https://access.redhat.com/errata/RHSA-2020:0544	third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0594	third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2022/04/27/4	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2018-1000007?: CVE-2018-1000007 has been scored as a critical severity vulnerability.
How to fix CVE-2018-1000007?: To fix CVE-2018-1000007, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-1000007 being actively exploited in the wild?: It is possible that CVE-2018-1000007 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.