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CVE-2015-8804

9.8 · CRITICAL

x86_64/ecc-384-modp.asm in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-384 NIST elliptic curve, which allows attackers…

Published Feb 23, 2016CWE-254EPSS 3.95%

Overview

CVE-2015-8804 is a critical-severity vulnerability. It was published on February 23, 2016 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

x86_64/ecc-384-modp.asm in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-384 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-updates/2016-02/msg00091.htmlReflists.opensuse.org/opensuse-updates/2016-02/msg00093.htmlReflists.opensuse.org/opensuse-updates/2016-02/msg00100.htmlRefrhn.redhat.com/errata/RHSA-2016-2582.htmlRefwww.openwall.com/lists/oss-security/2016/02/02/2Refwww.openwall.com/lists/oss-security/2016/02/03/1Refwww.ubuntu.com/usn/USN-2897-1Refblog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.htmlRefgit.lysator.liu.se/nettle/nettle/commit/fa269b6ad06dd13c901dbd84a12e52b918a09cd7Reflists.gnu.org/archive/html/info-gnu/2016-01/msg00006.html

How CyberStrike helps

Frequently asked questions

What is CVE-2015-8804?

CVE-2015-8804 is a critical-severity vulnerability. It was published on February 23, 2016 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

How severe is CVE-2015-8804?

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-8804?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2015-8804?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-8804 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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