Vulnerability in Nettle Project
CVE-2015-8805
The ecc_256_modq 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-2015-8803.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.028 (85.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Nettle Project
- Canonical Ubuntu Linux — versions 14.04, 15.10
- openSUSE Leap — versions 42.1
- openSUSE — versions 13.1, 13.2
Weakness classification (CWE)
References
- lists.opensuse.org/opensuse-updates/2016-02/msg00100.html (vendor-advisory)
- blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplica…
- lists.opensuse.org/opensuse-updates/2016-02/msg00093.html (vendor-advisory)
- git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d (Patch)
- www.ubuntu.com/usn/USN-2897-1 (vendor-advisory)
- lists.opensuse.org/opensuse-updates/2016-02/msg00091.html (vendor-advisory)
- www.openwall.com/lists/oss-security/2016/02/02/2 (mailing-list)
- rhn.redhat.com/errata/RHSA-2016-2582.html (vendor-advisory)
- www.securityfocus.com/bid/84272 (vdb-entry)
- www.openwall.com/lists/oss-security/2016/02/03/1 (mailing-list)
Frequently asked questions
- What is CVE-2015-8805?
- CVE-2015-8805 is a critical-severity vulnerability in Nettle Project, classified under Cryptographic Issues. CVSS score: 9.8/10. Published 2016-02-23.
- How severe is CVE-2015-8805?
- Critical severity. CVSS v3 base score is 9.8 out of 10.