It was discovered that cURL, an URL transfer library, if configured to use a proxy server with the HTTPS protocol, by default could send to the proxy the same HTTP headers it sends to the destination server, possibly leaking sensitive information.

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Debian Security Advisory DSA-3240-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.debian.org/security/                        Alessandro Ghedini
April 29, 2015                         http://www.debian.org/security/faq
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Package        : curl
CVE ID         : CVE-2015-3153
Debian Bug     : 

It was discovered that cURL, an URL transfer library, if configured to
use a proxy server with the HTTPS protocol, by default could send to the
proxy the same HTTP headers it sends to the destination server, possibly
leaking sensitive information.

For the stable distribution (jessie), this problem has been fixed in
version 7.38.0-4+deb8u2.

For the testing distribution (stretch), this problem will be fixed in
version 7.42.1-1.

For the unstable distribution (sid), this problem has been fixed in
version 7.42.1-1.

We recommend that you upgrade your curl packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.