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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Bouncy Castle vulnerabilities (USN-8108-1)

medium Nessus Plugin ID 303028

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8108-1 advisory.

 It was discovered that Bouncy Castle did not sanitize user input when inserting it into an LDAP search filter. An attacker could possibly use this issue to perform an LDAP injection attack. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2023-33201)

 It was discovered that Bouncy Castle incorrectly handled specially crafted F2m parameters in the ECCurve algorithm. An attacker could possibly use this issue to cause Bouncy Castle to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2024-29857)

 It was discovered that Bouncy Castle leaked timing information when handling exceptions during an RSA handshake. An attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2024-30171)

 It was discovered that Bouncy Castle incorrectly handled endpoint identification with an SSL socket enabled without an explicit hostname. An attacker could possibly use this issue to perform a DNS poisoning attack. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS.
 (CVE-2024-34447)

 Bing Shi discovered that Bouncy Castle incorrectly handled resource memory allocation. An attacker could possibly use this issue to cause Bouncy Castle to use excessive resources, leading to a denial of service.
 This issue only affected Ubuntu 24.04 LTS. (CVE-2025-8916)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8108-1

Plugin Details

Severity: Medium

ID: 303028

File Name: ubuntu_USN-8108-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/19/2026

Updated: 3/19/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2023-33201

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2025-8916

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libbcjmail-java, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libbctls-java, p-cpe:/a:canonical:ubuntu_linux:libbcutil-java, p-cpe:/a:canonical:ubuntu_linux:libbcmail-java, p-cpe:/a:canonical:ubuntu_linux:libbcpg-java, p-cpe:/a:canonical:ubuntu_linux:libbcprov-java, p-cpe:/a:canonical:ubuntu_linux:libbcpkix-java, cpe:/o:canonical:ubuntu_linux:22.04:-:lts

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 3/18/2026

Vulnerability Publication Date: 7/5/2023

Reference Information

CVE: CVE-2023-33201, CVE-2024-29857, CVE-2024-30171, CVE-2024-30172, CVE-2024-34447, CVE-2025-8916

USN: 8108-1