Bouncy Castle up to 1.77 certificate host validation

Summaryinfo

A vulnerability was found in Bouncy Castle up to 1.77. It has been rated as critical. This issue affects some unknown processing. Performing a manipulation results in certificate host validation. This vulnerability is known as CVE-2024-34447. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Bouncy Castle up to 1.77. This affects an unknown function. The manipulation with an unknown input leads to a certificate host validation vulnerability. CWE is classifying the issue as CWE-297. The product communicates with a host that provides a certificate, but the product does not properly ensure that the certificate is actually associated with that host. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Bouncy Castle Java Cryptography APIs before BC 1.78. When endpoint identification is enabled in the BCJSSE and an SSL socket is created without an explicit hostname (as happens with HttpsURLConnection), hostname verification could be performed against a DNS-resolved IP address in some situations, opening up a possibility of DNS poisoning.

The advisory is shared at bouncycastle.org. This vulnerability is uniquely identified as CVE-2024-34447. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1587.003 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 232128 (Linux Distros Unpatched Vulnerability : CVE-2024-34447), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.78 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (232128). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Bouncy Castle

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 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
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37
• 1.38
• 1.39
• 1.40
• 1.41
• 1.42
• 1.43
• 1.44
• 1.45
• 1.46
• 1.47
• 1.48
• 1.49
• 1.50
• 1.51
• 1.52
• 1.53
• 1.54
• 1.55
• 1.56
• 1.57
• 1.58
• 1.59
• 1.60
• 1.61
• 1.62
• 1.63
• 1.64
• 1.65
• 1.66
• 1.67
• 1.68
• 1.69
• 1.70
• 1.71
• 1.72
• 1.73
• 1.74
• 1.75
• 1.76
• 1.77

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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