CVE-2015-3153

Publication date 29 April 2015

Last updated 24 July 2024

Ubuntu priority

The default configuration for cURL and libcurl before 7.42.1 sends custom HTTP headers to both the proxy and destination server, which might allow remote proxy servers to obtain sensitive information by reading the header contents.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
curl	15.04 vivid	Fixed 7.38.0-3ubuntu2.2
	14.10 utopic	Fixed 7.37.1-1ubuntu3.4
	14.04 LTS trusty	Ignored
	12.04 LTS precise	Ignored
	10.04 LTS lucid	Ignored end of life

Notes

mdeslaur

in curl versions before 7.37.0, the same headers are always sent to both the destination server and the proxy. In 7.37.0, two new options were introduced to control which headers are sent to the server and which headers are sent to the proxy: CURLOPT_HEADEROPT and CURLOPT_PROXYHEADER. The default is to send the headers to both servers, contrary to expectations. The fix is to change the default to send separate headers. Introducing split header functionality in older versions of curl is intrusive, and will change behaviour. We will not be fixing this issue in Ubuntu 14.04 LTS and earlier.

Patch details

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

Package	Patch details
curl	Upstream: http://curl.haxx.se/CVE-2015-3153.patch Upstream: ac887ee Upstream: ef6be35 Upstream: fa0a5e6 Upstream: 4946ea0 Upstream: 20f61cd Upstream: d3d2755 Upstream: 7485134 Upstream: 109e94c Upstream: c877c50

References

Related Ubuntu Security Notices (USN)