A mistake in the computation of elliptic curve scalar multiplications was found in nettle. The computation compiles a certain curve point with 1, which should not change the coordinates, however it does. External reference: https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003028.html Upstream fix: https://git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d
Created nettle tracking bugs for this issue: Affects: fedora-all [bug 1304305] Affects: epel-5 [bug 1304307]
Created mingw-nettle tracking bugs for this issue: Affects: fedora-all [bug 1304304] Affects: epel-7 [bug 1304308]
Created compat-nettle27 tracking bugs for this issue: Affects: fedora-23 [bug 1304306]
CVE assignment: http://seclists.org/oss-sec/2016/q1/273
nettle-3.2-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Reporter's blog post: https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html Fixed upstream in nettle 3.2: https://lists.gnu.org/archive/html/info-gnu/2016-01/msg00006.html
Created attachment 1122346 [details] Test case Local copy of the test case that was posted to the upstream list: https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003028.html
mingw-gnutls-3.4.9-1.fc23, mingw-nettle-3.2-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
nettle-2.7.1-6.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
compat-nettle27-2.7.1-2.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2016:2582 https://rhn.redhat.com/errata/RHSA-2016-2582.html