Bouncycastle Bouncy-castle-crypto-package up to 1.35 Remote Code Execution

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.4	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as very critical has been found in Bouncycastle Bouncy-castle-crypto-package. This impacts an unknown function. Executing a manipulation can lead to Remote Code Execution. This vulnerability is handled as CVE-2007-6721. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as very critical was found in Bouncycastle Bouncy-castle-crypto-package. This vulnerability affects an unknown part. The manipulation with an unknown input leads to a remote code execution vulnerability. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Legion of the Bouncy Castle Java Cryptography API before release 1.38, as used in Crypto Provider Package before 1.36, has unknown impact and remote attack vectors related to "a Bleichenbacher vulnerability in simple RSA CMS signatures without signed attributes."

The weakness was released 11/09/2007 (Website). The advisory is available at bouncycastle.org. This vulnerability was named CVE-2007-6721 since 03/29/2009. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/12/2025).

Upgrading to version 1.13 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at OSVDB (50358†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Bouncycastle

Name

• Bouncy-castle-crypto-package

Version

• 1.0
• 1.01
• 1.02
• 1.03
• 1.04
• 1.05
• 1.06
• 1.07
• 1.08
• 1.09
• 1.3.1
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.32
• 1.33
• 1.34
• 1.35

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Bouncy-castle-crypto-package 1.13

Timelineinfo

11/09/2007 🔍
10/01/2008 +327 days 🔍
03/29/2009 +178 days 🔍
03/29/2009 +0 days 🔍
03/17/2015 +2179 days 🔍
05/12/2025 +3709 days 🔍

Sourcesinfo

Advisory: bouncycastle.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-6721 (🔍)
GCVE (CVE): GCVE-0-2007-6721
GCVE (VulDB): GCVE-100-47386
OSVDB: 50358 - Legion of the Bouncy Castle Provider Package Simple RSA CMS Signature Bleichenbacher Weakness

Entryinfo

Created: 03/17/2015 23:38
Updated: 05/12/2025 20:49
Changes: 03/17/2015 23:38 (43), 11/03/2018 18:05 (6), 05/12/2025 20:49 (19)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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