CVE-2015-7940: bouncycastle bouncy_castle_crypto_package
Vulnerability summary
CVE-2015-7940 is a medium (CVSS 5.0) vulnerability in bouncycastle bouncy_castle_crypto_package. EPSS estimates a 4.69% chance of exploitation in the next 30 days, higher than 91.8% of scored vulnerabilities.
Not severe (CVSS 5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 09-11-2015PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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."
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
4.69%
Chance of exploitation in the next 30 days
Percentile
92%
Versus all other CVEs
30-day change
Decrease -0.13 pp
From 4.82% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-200Exposure of Sensitive Information to an Unauthorized ActorThe product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
- CWE-310Cryptographic IssuesWeaknesses in this category are related to the design and implementation of data confidentiality and integrity. Frequently these deal with the use of encoding techniques, encryption libraries, and hashing algorithms. The weaknesses in this category could lead to a degradation of the quality data if they are not addressed.
Affected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Chainguard8 products
- eco-java-gradle-1.11All versions (No fix recorded)
- eco-java-gradle-2.0All versions (No fix recorded)
- eco-java-gradle-2.1All versions (No fix recorded)
- eco-java-gradle-2.2All versions (No fix recorded)
- eco-java-gradle-2.2.1All versions (No fix recorded)
Oracle4 products
- application_testing_suite12.5.0.1 | 12.5.0.2 | 12.5.0.3
- enterprise_manager_ops_center12.1.4 | 12.2.2
- peoplesoft_enterprise_peopletools8.54 | 8.55
- virtual_desktop_infrastructure3.5.2
Org.bouncycastle3 products
- bcprov-jdk14< 1.51
- bcprov-jdk15< 1.51
- bcprov-jdk15on< 1.51
Bouncycastle1 product
Debian1 product
- bouncycastle< 1.51-1 | < 1.44+dfsg-2+deb6u1 | < 1.44+dfsg-3.1+deb7u1 | < 1.49+dfsg-3+deb8u1
Mageia1 product
- bouncycastle< 1.50-3.1.mga5
Ubuntu1 product
- bouncycastle< 1.49+dfsg-2ubuntu0.1
8 vendors · 21 products
References
32 links- lists.opensuse.org/opensuse-security-announce/2015-11/msg00012.htmlVendor AdvisoryX Refsource SUSEThird Party AdvisoryWEB
- lists.fedoraproject.org/pipermail/package-announce/2016-January/174915.htmlVendor AdvisoryX Refsource FEDORAWEB
- www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlX Refsource CONFIRMThird Party AdvisoryWEB
Show all 32 references
- www.openwall.com/lists/oss-security/2015/10/22/9Mailing ListX Refsource MLISTThird Party AdvisoryVDB EntryWEB
- www.openwall.com/lists/oss-security/2015/10/22/7Mailing ListX Refsource MLISTThird Party AdvisoryVDB EntryWEB
- web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.htmlX Refsource MISCTechnical DescriptionWEB
