fixup! Firefox preference overrides.

MB361: Disable only cyphersuites using SH1 for signing (ECDSA).

browser/app/profile/001-base-profile.js

@@ -121,16 +121,13 @@ pref("network.http.referer.hideOnionSource", true);
 // [4] https://www.ssllabs.com/ssl-pulse/
 pref("security.ssl.require_safe_negotiation", true);
 
-// Bug 40183: Disable TLS ciphersuites using SHA-1
-// https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/40183
+// mullvad-browser#361: Disable TLS cyphersuites using SHA1 for signing (ECDSA)
+// see https://bugzilla.mozilla.org/show_bug.cgi?id=1600437
+pref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false);
+pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false);
+// lock those disabled by https://bugzilla.mozilla.org/show_bug.cgi?id=1036765
 pref("security.ssl3.dhe_rsa_aes_128_sha", false, locked);
 pref("security.ssl3.dhe_rsa_aes_256_sha", false, locked);
-pref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false, locked);
-pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false, locked);
-pref("security.ssl3.ecdhe_rsa_aes_128_sha", false, locked);
-pref("security.ssl3.ecdhe_rsa_aes_256_sha", false, locked);
-pref("security.ssl3.rsa_aes_128_sha", false, locked);
-pref("security.ssl3.rsa_aes_256_sha", false, locked);
 
 // Wrapping a static pref to lock it and prevent changing.
 // See tor-browser#40565.