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.
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-4098-1 | curl security update |
EUVD |
EUVD-2018-1778 | 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. |
Ubuntu USN |
USN-3554-1 | curl vulnerabilities |
Ubuntu USN |
USN-3554-2 | curl vulnerability |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 16 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
epss
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epss
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Projects
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-05T12:33:48.439Z
Reserved: 2018-01-22T00:00:00.000Z
Link: CVE-2018-1000007
No data.
Status : Modified
Published: 2018-01-24T22:29:00.353
Modified: 2024-11-21T03:39:24.663
Link: CVE-2018-1000007
OpenCVE Enrichment
No data.
Weaknesses
Debian DSA
EUVD
Ubuntu USN