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1200s: ciphers=>inactive #237

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Thorin-Oakenpants 2017-09-16 06:20:00 +12:00 committed by GitHub
parent c84a59fd95
commit 89474d014f
1 changed files with 10 additions and 12 deletions
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user.js
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@ -663,13 +663,11 @@ user_pref("browser.tabs.remote.allowLinkedWebInFileUriProcess", false);
vector, see [1] (It's quite technical but the first part is easy to understand vector, see [1] (It's quite technical but the first part is easy to understand
and you can stop reading when you reach the second section titled "Enter Bro") and you can stop reading when you reach the second section titled "Enter Bro")
Option 1: Use our settings to tighten up encryption options. It *is* a fingerprinting attack Option 1: Use Firefox defaults for the 1260's items (item 1260 default for SHA-1, is local
vector, and we certainly do want to reduce any attack surface, but this is not how only anyway). There is nothing *weak* about Firefox's defaults, but Mozilla (and
you *DEFEAT* fingerprinting - to do that you need large numbers to buy into the same other browsers) will always lag for fear of breakage and upset end-users
enforced browser-wide settings (such as TBB), and/or you use OpSec. Option 2: Disable the ciphers in 1261, 1262 and 1263. These shouldn't break anything.
Option 2: Use Firefox defaults for the 1260's items (item 1260 default for SHA-1, is local only Optionally, disable the ciphers in 1264.
anyway). There is nothing *weak* about Firefox's defaults, but Mozilla (and other
browsers) will always lag for fear of breakage and upset end-users
[1] https://www.securityartwork.es/2017/02/02/tls-client-fingerprinting-with-bro/ [1] https://www.securityartwork.es/2017/02/02/tls-client-fingerprinting-with-bro/
***/ ***/
@ -779,15 +777,15 @@ user_pref("security.pki.sha1_enforcement_level", 1);
* [1] https://en.wikipedia.org/wiki/3des#Security * [1] https://en.wikipedia.org/wiki/3des#Security
* [2] http://en.citizendium.org/wiki/Meet-in-the-middle_attack * [2] http://en.citizendium.org/wiki/Meet-in-the-middle_attack
* [3] https://www-archive.mozilla.org/projects/security/pki/nss/ssl/fips-ssl-ciphersuites.html ***/ * [3] https://www-archive.mozilla.org/projects/security/pki/nss/ssl/fips-ssl-ciphersuites.html ***/
user_pref("security.ssl3.rsa_des_ede3_sha", false); // user_pref("security.ssl3.rsa_des_ede3_sha", false);
/* 1262: disable 128 bits ***/ /* 1262: disable 128 bits ***/
user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false); // user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false);
user_pref("security.ssl3.ecdhe_rsa_aes_128_sha", false); // user_pref("security.ssl3.ecdhe_rsa_aes_128_sha", false);
/* 1263: disable DHE (Diffie-Hellman Key Exchange) /* 1263: disable DHE (Diffie-Hellman Key Exchange)
* [WARNING] May break obscure sites, but not major sites, which should support ECDH over DHE * [WARNING] May break obscure sites, but not major sites, which should support ECDH over DHE
* [1] https://www.eff.org/deeplinks/2015/10/how-to-protect-yourself-from-nsa-attacks-1024-bit-DH ***/ * [1] https://www.eff.org/deeplinks/2015/10/how-to-protect-yourself-from-nsa-attacks-1024-bit-DH ***/
user_pref("security.ssl3.dhe_rsa_aes_128_sha", false); // user_pref("security.ssl3.dhe_rsa_aes_128_sha", false);
user_pref("security.ssl3.dhe_rsa_aes_256_sha", false); // user_pref("security.ssl3.dhe_rsa_aes_256_sha", false);
/* 1264: disable the remaining non-modern cipher suites as of FF52 /* 1264: disable the remaining non-modern cipher suites as of FF52
* [NOTE] Commented out because it still breaks too many sites ***/ * [NOTE] Commented out because it still breaks too many sites ***/
// user_pref("security.ssl3.rsa_aes_128_sha", false); // user_pref("security.ssl3.rsa_aes_128_sha", false);