CVE-2024-30171: Medium severity nuget/BouncyCastle.Cryptography vulnerability

Published Apr 22, 2024
·
Updated

An issue was discovered in Bouncy Castle Java TLS API and JSSE Provider before 1.78. Timing-based leakage may occur in RSA based handshakes because of exception processing.

Other sources

BouncyCastle before version 1.78 is vulnerable to timing side-channel attacks against RSA decryption (both PKCS#1v1.5 and OAEP).

References: https://www.bouncycastle.org/releasenotes.html https://github.com/bcgit/bc-java/issues/1528 https://people.redhat.com/~hkario/marvin/

— Red Hat

The Bouncy Castle Crypto Package For Java could allow a remote authenticated attacker to obtain sensitive information, caused by a flaw in the RSA decryption (both PKCS#1v1.5 and OAEP) feature. By utilize timing side-channel attack techniques, an attacker could exploit this vulnerability to obtain sensitive information, and use this information to launch further attacks against the affected system.

— IBM

Affected Software

11 affected componentsFixes available
nuget/BouncyCastle.Cryptography<2.3.1
2.3.1
nuget/BouncyCastle<2.3.1
maven/org.bouncycastle:bctls-jdk15to18<1.78
1.78
maven/org.bouncycastle:bctls-jdk14<1.78
1.78
maven/org.bouncycastle:bctls-jdk18on<1.78
1.78
maven/org.bouncycastle:bcprov-jdk14<1.78
1.78
maven/org.bouncycastle:bcprov-jdk15to18<1.78
1.78
maven/org.bouncycastle:bcprov-jdk15on<1.78
1.78
maven/org.bouncycastle:bcprov-jdk18on<1.78
1.78
maven/org.bouncycastle:bctls-fips<1.0.19
1.0.19
redhat/org.bouncycastle-bcprov-jdk18on<1.78
1.78

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade nuget/BouncyCastle.Cryptography to a version that resolves this vulnerability.

    Fixed in 2.3.1
  2. Upgrade

    Upgrade maven/org.bouncycastle:bctls-jdk15to18 to a version that resolves this vulnerability.

    Fixed in 1.78
  3. Upgrade

    Upgrade maven/org.bouncycastle:bctls-jdk14 to a version that resolves this vulnerability.

    Fixed in 1.78
  4. Upgrade

    Upgrade maven/org.bouncycastle:bctls-jdk18on to a version that resolves this vulnerability.

    Fixed in 1.78
  5. Upgrade

    Upgrade maven/org.bouncycastle:bcprov-jdk14 to a version that resolves this vulnerability.

    Fixed in 1.78
  6. Upgrade

    Upgrade maven/org.bouncycastle:bcprov-jdk15to18 to a version that resolves this vulnerability.

    Fixed in 1.78
  7. Upgrade

    Upgrade maven/org.bouncycastle:bcprov-jdk15on to a version that resolves this vulnerability.

    Fixed in 1.78
  8. Upgrade

    Upgrade maven/org.bouncycastle:bcprov-jdk18on to a version that resolves this vulnerability.

    Fixed in 1.78
  9. Upgrade

    Upgrade maven/org.bouncycastle:bctls-fips to a version that resolves this vulnerability.

    Fixed in 1.0.19
  10. Upgrade

    Upgrade redhat/org.bouncycastle-bcprov-jdk18on to a version that resolves this vulnerability.

    Fixed in 1.78
  11. Upgrade

    Upgrade Bouncy Castle Java TLS API and JSSE Provider to a version that resolves this vulnerability.

    Fixed in 1.78
  12. Compensating control

    Mitigate timing side-channel leakage in RSA-based handshakes by reducing exposure to attacker-controlled measurements (e.g., limit/restrict access to TLS endpoints and enforce network/ACL protections so only trusted clients can perform RSA handshakes).

Event History

Apr 22, 2024
Data Sourced
via Red Hat·09:34 AM
DescriptionSeverityAffected Software
May 9, 2024
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
May 14, 2024
Data Sourced
via NVD·03:21 PM
DescriptionSeverityWeakness
Advisory Published
via GitHub·03:32 PM
Feb 4, 2025
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2024-30171?

CVE-2024-30171 has been classified as a high-severity vulnerability due to its potential for timing side-channel attacks.

2

How do I fix CVE-2024-30171?

To fix CVE-2024-30171, update the Bouncy Castle libraries to versions 1.78 or higher for Maven packages, or to version 2.3.1 for NuGet packages.

3

What systems are affected by CVE-2024-30171?

CVE-2024-30171 affects Bouncy Castle Java TLS API and JSSE Provider versions before 1.78 along with several specific package variations.

4

What type of attack does CVE-2024-30171 enable?

CVE-2024-30171 enables timing-based side-channel attacks against RSA decryption in affected versions.

5

Which products utilize the vulnerable Bouncy Castle versions related to CVE-2024-30171?

IBM Security Verify Governance is one of the products that may utilize the vulnerable Bouncy Castle versions associated with CVE-2024-30171.

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