CVE-2015-7940

bouncycastle: Invalid curve attack allowing to extract private keys

Severity Score

3.7

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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."

La librería Bouncy Castle Java en versiones anteriores a 1.51 no valida un punto que se encuentra dentro de la curva elíptica, lo que facilita a atacantes remotos obtener claves privadas a través de una serie de intercambios de clave de curva elíptica Diffie Hellman (ECDH) manipulados, también conocida como un 'ataque de curva no válida'.

It was found that bouncycastle is vulnerable to an invalid curve attack. An attacker could extract private keys used in elliptic curve cryptography with a few thousand queries.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-10-22 CVE Reserved
2015-11-09 CVE Published
2023-06-27 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWE-310: Cryptographic Issues
CWE-358: Improperly Implemented Security Check for Standard

CAPEC

References (23)

URL	Tag	Source
http://web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.html	Technical Description
http://www.openwall.com/lists/oss-security/2015/10/22/7	Mailing List
http://www.openwall.com/lists/oss-security/2015/10/22/9	Mailing List
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html	X_refsource_confirm
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html	X_refsource_confirm
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html	X_refsource_confirm
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html	X_refsource_confirm
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html	Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html	X_refsource_confirm
http://www.securityfocus.com/bid/79091	Vdb Entry
http://www.securitytracker.com/id/1037036	Vdb Entry
http://www.securitytracker.com/id/1037046	Vdb Entry
http://www.securitytracker.com/id/1037053	Vdb Entry
https://www.oracle.com/security-alerts/cpuapr2020.html	X_refsource_misc
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174915.html	2019-01-16
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00012.html	2019-01-16
http://rhn.redhat.com/errata/RHSA-2016-2035.html	2019-01-16
http://rhn.redhat.com/errata/RHSA-2016-2036.html	2019-01-16
http://www.debian.org/security/2015/dsa-3417	2019-01-16
https://usn.ubuntu.com/3727-1	2019-01-16
https://access.redhat.com/security/cve/CVE-2015-7940	2016-10-06
https://bugzilla.redhat.com/show_bug.cgi?id=1276272	2016-10-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				42.1 Search vendor "Opensuse" for product "Leap" and version "42.1"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				13.1 Search vendor "Opensuse" for product "Opensuse" and version "13.1"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				13.2 Search vendor "Opensuse" for product "Opensuse" and version "13.2"		-		Affected
Bouncycastle Search vendor "Bouncycastle"		Bouncy Castle Crypto Package Search vendor "Bouncycastle" for product "Bouncy Castle Crypto Package"				<= 1.50 Search vendor "Bouncycastle" for product "Bouncy Castle Crypto Package" and version " <= 1.50"		-		Affected
Oracle Search vendor "Oracle"		Application Testing Suite Search vendor "Oracle" for product "Application Testing Suite"				12.5.0.1 Search vendor "Oracle" for product "Application Testing Suite" and version "12.5.0.1"		-		Affected
Oracle Search vendor "Oracle"		Application Testing Suite Search vendor "Oracle" for product "Application Testing Suite"				12.5.0.2 Search vendor "Oracle" for product "Application Testing Suite" and version "12.5.0.2"		-		Affected
Oracle Search vendor "Oracle"		Application Testing Suite Search vendor "Oracle" for product "Application Testing Suite"				12.5.0.3 Search vendor "Oracle" for product "Application Testing Suite" and version "12.5.0.3"		-		Affected
Oracle Search vendor "Oracle"		Enterprise Manager Ops Center Search vendor "Oracle" for product "Enterprise Manager Ops Center"				12.1.4 Search vendor "Oracle" for product "Enterprise Manager Ops Center" and version "12.1.4"		-		Affected
Oracle Search vendor "Oracle"		Enterprise Manager Ops Center Search vendor "Oracle" for product "Enterprise Manager Ops Center"				12.2.2 Search vendor "Oracle" for product "Enterprise Manager Ops Center" and version "12.2.2"		-		Affected
Oracle Search vendor "Oracle"		Peoplesoft Enterprise Peopletools Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools"				8.54 Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools" and version "8.54"		-		Affected
Oracle Search vendor "Oracle"		Peoplesoft Enterprise Peopletools Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools"				8.55 Search vendor "Oracle" for product "Peoplesoft Enterprise Peopletools" and version "8.55"		-		Affected
Oracle Search vendor "Oracle"		Virtual Desktop Infrastructure Search vendor "Oracle" for product "Virtual Desktop Infrastructure"				3.5.2 Search vendor "Oracle" for product "Virtual Desktop Infrastructure" and version "3.5.2"		-		Affected