Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2015-7940

5.0 · MEDIUM

The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted ellipti…

Published Nov 9, 2015opensuseCWE-200EPSS 4.82%

Overview

CVE-2015-7940 is a medium-severity vulnerability affecting opensuse leap. It was published on November 9, 2015 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an "invalid curve attack."

Remediation

Check the references section for vendor advisories and patches from opensuse. Update leap to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
bouncycastlebouncy_castle_crypto_package0Affected

References

Reflists.fedoraproject.org/pipermail/package-announce/2016-January/174915.htmlReflists.opensuse.org/opensuse-security-announce/2015-11/msg00012.htmlRefrhn.redhat.com/errata/RHSA-2016-2035.htmlRefrhn.redhat.com/errata/RHSA-2016-2036.htmlRefweb-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.htmlRefwww.debian.org/security/2015/dsa-3417Refwww.openwall.com/lists/oss-security/2015/10/22/7Refwww.openwall.com/lists/oss-security/2015/10/22/9Refwww.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.htmlRefwww.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

How CyberStrike helps

Frequently asked questions

What is CVE-2015-7940?

CVE-2015-7940 is a medium-severity vulnerability affecting opensuse leap. It was published on November 9, 2015 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2015-7940?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-7940?

Check the references section for vendor advisories and patches from opensuse. Update leap to the latest patched version. 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-2015-7940?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-7940 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.

Related MEDIUM CVEs from 2015

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999