Vulnerability in Nettle Project
CVE-2015-8803
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.
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: 0.042 (90.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · 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.lysator.liu.se/pipermail/nettle-bugs/2015/003028.html (Vendor Advisory, mailing-list)
- lists.fedoraproject.org/pipermail/package-announce/2016-February/177473.html (vendor-advisory)
- 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)
Frequently asked questions
- What is CVE-2015-8803?
- CVE-2015-8803 is a critical-severity vulnerability in Nettle Project, classified under CWE-254. CVSS score: 9.8/10. Published 2016-02-23.
- How severe is CVE-2015-8803?
- Critical severity. CVSS v3 base score is 9.8 out of 10.