CWE-329
Generation of Predictable IV with CBC Mode
The product generates and uses a predictable initialization Vector (IV) with Cipher Block Chaining (CBC) Mode, which causes algorithms to be susceptible to dictionary attacks when they are encrypted under the same key.
CVE-2024-49783 (GCVE-0-2024-49783)
Vulnerability from cvelistv5
Published
2025-07-08 18:36
Modified
2025-08-24 11:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-329 - Generation of Predictable IV with CBC Mode
Summary
IBM OpenPages with Watson 8.3 and 9.0
could provide weaker than expected security in storage of encrypted data. If an authenticated remote attacker with access to the database or a local attacker with access to server files could extract the encrypted data, they could exploit this vulnerability to use additional cryptographic methods to possibly extract the encrypted data.
References
| ▼ | URL | Tags |
|---|---|---|
| https://www.ibm.com/support/pages/node/7239145 | vendor-advisory, patch |
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| IBM | OpenPages with Watson |
Version: 8.3 Version: 9.0 cpe:2.3:a:ibm:openpages_with_watson:8.3:*:*:*:*:*:*:* cpe:2.3:a:ibm:openpages_with_watson:9.0:*:*:*:*:*:*:* |
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CVE-2025-2814 (GCVE-0-2025-2814)
Vulnerability from cvelistv5
Published
2025-04-12 23:41
Modified
2025-09-05 13:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Crypt::CBC versions between 1.21 and 3.05 for Perl may use the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.
This issue affects operating systems where "/dev/urandom'" is unavailable. In that case, Crypt::CBC will fallback to use the insecure rand() function.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| LDS | Crypt::CBC |
Version: 1.21 < |
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Mitigation
Phase: Implementation
Description:
- NIST recommends two methods of generating unpredictable IVs for CBC mode [REF-1172]. The first is to generate the IV randomly. The second method is to encrypt a nonce with the same key and cipher to be used to encrypt the plaintext. In this case the nonce must be unique but can be predictable, since the block cipher will act as a pseudo random permutation.
No CAPEC attack patterns related to this CWE.