MozillaFirefox 45 ESR was updated to 45.7 to fix the following issues (bsc#1021991):
MFSA 2017-02/CVE-2017-5378: Pointer and frame data leakage of Javascript objects (bsc#1021818) * MFSA 2017-02/CVE-2017-5396: Use-after-free with Media Decoder (bsc#1021821) * MFSA 2017-02/CVE-2017-5386: WebExtensions can use data: protocol to affect other extensions (bsc#1021823) * MFSA 2017-02/CVE-2017-5380: Potential use-after-free during DOM manipulations (bsc#1021819) * MFSA 2017-02/CVE-2017-5390: Insecure communication methods in Developer Tools JSON viewer (bsc#1021820) * MFSA 2017-02/CVE-2017-5373: Memory safety bugs fixed in Firefox 51 and Firefox ESR 45.7 (bsc#1021824) * MFSA 2017-02/CVE-2017-5375: Excessive JIT code allocation allows bypass of ASLR and DEP (bsc#1021814) * MFSA 2017-02/CVE-2017-5376: Use-after-free in XSL (bsc#1021817) * MFSA 2017-02/CVE-2017-5383: Location bar spoofing with unicode characters (bsc#1021822)
Please see https://www.mozilla.org/en-US/security/advisories/mfsa2017-02/ for more information.