CVE-2024-34447

highpriority · track · 0EPSS 0.008 · 55 %ileDEEUNLUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.77% (55th) EPSS
CVSS 7.5 · high
Is it mine?
64 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-22

An issue was discovered in the Bouncy Castle Crypto Package For Java before BC TLS Java 1.0.19 (ships with BC Java 1.78, BC Java (LTS) 2.73.6) and before BC FIPS TLS Java 1.0.19. 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.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondaryexploitability 3.9 · impact 3.6
v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-297USCWE-297USCWE-706US
04

affected products (64)

Products and version ranges known to be affected.

showing 20 of 64
05

advisories (4)

Vendor and ecosystem advisories describing this.

  • NCSC-2025-0027Kwetsbaarheden verholpen in Oracle Fusion MiddlewareNL2025-01-22csaf · ncsc_nlNL

    Oracle heeft meerdere kwetsbaarheden verholpen in zijn producten, waaronder Oracle Fusion Middleware, Oracle WebLogic Server, en Oracle HTTP Server.

  • WID-SEC-W-2024-1031Bouncy Castle: Mehrere SchwachstellenDeutsch2024-05-05csaf · cert_bundDE

    Ein anonymer Angreifer kann mehrere Schwachstellen in Bouncy Castle ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen oder einen DNS-Poisoning-Angriff durchzuführen.

  • GHSA-4h8f-2wvx-gg5wBouncy Castle Java Cryptography API vulnerable to DNS poisoning2024-05-03ghsa · osvUS

    An issue was discovered in the Bouncy Castle Crypto Package For Java before BC TLS Java 1.0.19 (ships with BC Java 1.78, BC Java (LTS) 2.73.6) and before BC FIPS TLS Java 1.0.19. 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.

  • CGA-xf7g-2h39-r54g2024-06-06vendor · osvUS
06

also known as (5)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdosvcert_bundncsc_nlNVDCVE.orgMITRE
published 2024-05-03modified 2026-06-17
08

references (10)

External citations — patches, advisories, analysis.

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