CVE-2015-7940

Publication date 9 November 2015

Last updated 24 July 2024

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."

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
bouncycastle	18.04 LTS bionic	Not affected
	17.10 artful	Not affected
	17.04 zesty	Ignored end of life
	16.10 yakkety	Ignored end of life
	16.04 LTS xenial	Not affected
	15.10 wily	Ignored end of life
	15.04 vivid	Ignored end of life
	14.04 LTS trusty	Fixed 1.49+dfsg-2ubuntu0.1
	12.04 LTS precise	Ignored end of life

Notes

mdeslaur

no reverse depends in main

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
bouncycastle	Upstream: 5cb2f05 Upstream: e25e94a

References

Related Ubuntu Security Notices (USN)

USN-3727-1
Bouncy Castle vulnerabilities
1 August 2018