PRIOn knowledge basePRION:CVE-2015-8803Design/Logic Flaw
The ecc_256_modp function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-256 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors, a different vulnerability than CVE-2015-8805.
References
lists.opensuse.org/opensuse-updates/2016-02/msg00091.html
lists.opensuse.org/opensuse-updates/2016-02/msg00093.html
lists.opensuse.org/opensuse-updates/2016-02/msg00100.html
rhn.redhat.com/errata/RHSA-2016-2582.html
www.openwall.com/lists/oss-security/2016/02/02/2
www.openwall.com/lists/oss-security/2016/02/03/1
www.ubuntu.com/usn/USN-2897-1
blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html
git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d
lists.fedoraproject.org/pipermail/package-announce/2016-February/176807.html
lists.fedoraproject.org/pipermail/package-announce/2016-February/177229.html
lists.fedoraproject.org/pipermail/package-announce/2016-February/177473.html
lists.gnu.org/archive/html/info-gnu/2016-01/msg00006.html
lists.lysator.liu.se/pipermail/nettle-bugs/2015/003028.html
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