CVE-2015-8803
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-8803
Vendor advisory: cve@mitre.org — https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003028.html
Vendor advisory: cve@mitre.org — https://git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2015-8803.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 3.2-1 |
| debian | bullseye | fixed | 3.2-1 |
| debian | forky | fixed | 3.2-1 |
| debian | sid | fixed | 3.2-1 |
| debian | trixie | fixed | 3.2-1 |
| ubuntu | 14.04 | affected | |
| ubuntu | 15.10 | affected | |
| suse | 42.1 | affected | |
| suse | 13.1 | affected | |
| suse | 13.2 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| nettle_project | nettle | {"endIncluding":"3.1.1"} | |
References
- https://www.suse.com/security/cve/CVE-2015-8803.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176807.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177229.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177473.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00091.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00093.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00100.html
- http://rhn.redhat.com/errata/RHSA-2016-2582.html
- http://www.openwall.com/lists/oss-security/2016/02/02/2
- http://www.openwall.com/lists/oss-security/2016/02/03/1
- http://www.ubuntu.com/usn/USN-2897-1
- https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html
- https://git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d
- https://lists.gnu.org/archive/html/info-gnu/2016-01/msg00006.html
- https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003028.html
- https://security-tracker.debian.org/tracker/CVE-2015-8803
CWEs
CWE-254 CWE-310
Verify integrity in audit chain (admin only). AS-IS.