Weakness (CWE)
CWE-327: Use of a Broken or Risky Cryptographic Algorithm
The product uses a broken or risky cryptographic algorithm or protocol.
More detail
Cryptographic algorithms are the methods by which data is scrambled to prevent observation or influence by unauthorized actors. Insecure cryptography can be exploited to expose sensitive information, modify data in unexpected ways, spoof identities of other users or devices, or other impacts.
It is very difficult to produce a secure algorithm, and even high-profile algorithms by accomplished cryptographic experts have been broken. Well-known techniques exist to break or weaken various kinds of cryptography. Accordingly, there are a small number of well-understood and heavily studied algorithms that should be used by most products. Using a non-standard or known-insecure algorithm is dangerous because a determined adversary may be able to break the algorithm and compromise whatever data has been protected.
Since the state of cryptography advances so rapidly, it is common for an algorithm to be considered "unsafe" even if it was once thought to be strong. This can happen when new attacks are discovered, or if computing power increases so much that the cryptographic algorithm no longer provides the amount of protection that was originally thought.
For a number of reasons, this weakness is even more challenging to manage with hardware deployment of cryptographic algorithms as opposed to software implementation. First, if a flaw is discovered with hardware-implemented cryptography, the flaw cannot be fixed in most cases without a recall of the product, because hardware is not easily replaceable like software. Second, because the hardware product is expected to work for years, the adversary's computing power will only increase over time.
How to prevent it (5 mitigations)
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Architecture and Design
When there is a need to store or transmit sensitive data, use strong, up-to-date cryptographic algorithms to encrypt that data. Select a well-vetted algorithm that is currently considered to be strong by experts in the field, and use well-tested implementations. As with all cryptographic mechanisms, the source code should be available for analysis.
For example, US government systems require FIPS 140-2 certification [REF-1192].
Do not develop custom or private cryptographic algorithms. They will likely be exposed to attacks that are well-understood by cryptographers. Reverse engineering techniques are mature. If the algorithm can be compromised if attackers find out how it works, then it is especially weak.
Periodically ensure that the cryptography has not become obsolete. Some older algorithms, once thought to require a billion years of computing time, can now be broken in days or hours. This includes MD4, MD5, SHA1, DES, and other algorithms that were once regarded as strong. [REF-267]
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Architecture and Design
Ensure that the design allows one cryptographic algorithm to be replaced with another in the next generation or version. Where possible, use wrappers to make the interfaces uniform. This will make it easier to upgrade to stronger algorithms. With hardware, design the product at the Intellectual Property (IP) level so that one cryptographic algorithm can be replaced with another in the next generation of the hardware product.
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Architecture and Design
Carefully manage and protect cryptographic keys (see CWE-320). If the keys can be guessed or stolen, then the strength of the cryptography itself is irrelevant.
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Industry-standard implementations will save development time and may be more likely to avoid errors that can occur during implementation of cryptographic algorithms. Consider the ESAPI Encryption feature.
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Implementation, Architecture and Design
When using industry-approved techniques, use them correctly. Don't cut corners by skipping resource-intensive steps (CWE-325). These steps are often essential for preventing common attacks.
Source: MITRE CWE-327
484 results · Feed
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High 7.4
SanDisk PrivateAccess Deprecated TLS protocol versions supported
SanDisk PrivateAccess versions prior to 6.4.9 support insecure TLS 1.0 and TLS 1.1 protocols which are susceptible to man-in-the-middle attacks thereby compromising confidentiality and integrity of data.
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High 7.5
TP-Link router TL-WR940N V6 3.19.1 Build 180119 uses a deprecated MD5 algorithm to hash the admin password used for bas…
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Medium 5.9
Dell Secure Connect Gateway (SCG) version 5.14.00.12 contains a broken cryptographic algorithm vulnerability. A remote …
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Medium 5.9
Dell EMC Unity versions before 5.2.0.0.5.173 , use(es) broken cryptographic algorithm. A remote unauthenticated attacke…
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Medium 5.9
Dell PowerScale OneFS, versions 9.2.0.x through 9.4.0.x contain an information vulnerability. A remote unauthenticated …
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Low 2.3
IBM Sterling External Authentication Server information disclosure
IBM Sterling External Authentication Server 6.1.0 and IBM Sterling Secure Proxy 6.0.3 uses weaker than expected cryptographic algorithms during installation that could allow a local attacker to decrypt sensitive information. IBM X-Force ID: 231373.
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Low 3.7
IBM Security Verify Governance, Identity Manager virtual appliance component information disclosure
IBM Security Verify Governance, Identity Manager virtual appliance component 10.0.1 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 225078.
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Medium 5.9
IBM WebSphere Application Server information disclosure
IBM WebSphere Application Server 8.5 and 9.0 traditional container uses weaker than expected cryptographic keys that could allow an attacker to decrypt sensitive information. This affects only the containerized version of WebSphere Application Server traditio…
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Medium 5.3
The Birthday attack against 64-bit block ciphers flaw (CVE-2016-2183) was reported for the health checks port (9979) on…
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Medium 4.7
Use of a Broken or Risky Cryptographic Algorithm in the function mbedtls_mpi_exp_mod() in lignum.c in Mbed TLS Mbed TLS…
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Medium 5.9
jsonwebtoken unrestricted key type could lead to legacy keys usage
Versions `<=8.5.1` of `jsonwebtoken` library could be misconfigured so that legacy, insecure key types are used for signature verification. For example, DSA keys could be used with the RS256 algorithm. You are affected if you are using an algorithm and a key …
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Medium 5.9
IBM Security Verify Governance, Identity Manager information disclosure
IBM Security Verify Governance, Identity Manager 10.0.1 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 225007.
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Medium 6.4
jsonwebtoken vulnerable to signature validation bypass due to insecure default algorithm in jwt.verify()
In versions `<=8.5.1` of `jsonwebtoken` library, lack of algorithm definition in the `jwt.verify()` function can lead to signature validation bypass due to defaulting to the `none` algorithm for signature verification. Users are affected if you do not specify…
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Medium 6.5
Collision of hash values in github.com/bnb-chain/tss-lib
IO FinNet tss-lib before 2.0.0 allows a collision of hash values.
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Medium 5.1
IBM Spectrum Control information disclosure
IBM Spectrum Control 5.4 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 233982.
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Medium 6.5
Use of a Broken or Risky Cryptographic Algorithm in SICK RFU61x firmware version <v2.25 allows a low-privileged remote …
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Medium 6.5
Use of a Broken or Risky Cryptographic Algorithm in SICK RFU62x firmware version < 2.21 allows a low-privileged remote …
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Medium 6.5
Use of a Broken or Risky Cryptographic Algorithm in SICK RFU63x firmware version < v2.21 allows a low-privileged remote…
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Medium 6.5
Use of a Broken or Risky Cryptographic Algorithm in SICK RFU65x firmware version < v2.21 allows a low-privileged remote…
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Medium 6.5
Affected devices use a weak encryption scheme to encrypt the debug zip file. This could allow an authenticated attacker…
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Medium 5.9
IBM Sterling Secure Proxy information disclosure
IBM Sterling Secure Proxy 6.0.3 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 230522.
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Medium 5.9
IBM CICS TX information disclosure
IBM CICS TX 11.1 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 229464.
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Medium 5.9
IBM CICS TX information disclosure
IBM CICS TX 11.7 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 229463.
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Medium 5.3
SimpleXMQ before 3.4.0, as used in SimpleX Chat before 4.2, does not apply a key derivation function to intended data, …
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Medium 5.9
HCL Launch container images may contain non-unique https certificates and database encryption key
The provided HCL Launch Container images contain non-unique HTTPS certificates and a database encryption key. The fix provides directions and tools to replace the non-unique keys and certificates. This does not affect the standard installer packages.
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Medium 6.3
Digital Signature Hash Algorithms Not Validated in sylabs/sif
syslabs/sif is the Singularity Image Format (SIF) reference implementation. In versions prior to 2.8.1the `github.com/sylabs/sif/v2/pkg/integrity` package did not verify that the hash algorithm(s) used are cryptographically secure when verifying digital signa…
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Unscored —
A key length flaw was found in Red Hat Ceph Storage. An attacker can exploit the fact that the key length is incorrectl…
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High 7.5
Use of a Broken or Risky Cryptographic Algorithm in packbackbooks/lti-1-3-php-library
LTI 1.3 Tool Library is a library used for building IMS-certified LTI 1.3 tool providers in PHP. Prior to version 5.0, the function used to generate random nonces was not sufficiently cryptographically complex. Users should upgrade to version 5.0 to receive a…
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High 7.5
Authentication Bypass by Capture-replay in packbackbooks/lti-1-3-php-library
LTI 1.3 Tool Library is a library used for building IMS-certified LTI 1.3 tool providers in PHP. Prior to version 5.0, the Nonce Claim Value was not being validated against the nonce value sent in the Authentication Request. Users should upgrade to version 5.…
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Medium 6.7
A CWE-327: Use of a Broken or Risky Cryptographic Algorithm vulnerability exists where weak cipher suites can be used f…
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High 7.5CVE-2022-2097 Public exploit
AES OCB fails to encrypt some bytes
AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised implementation will not encrypt the entirety of the data under some circumstances. This could reveal sixteen bytes of data that was preexisting in the memory that wasn't written. In the…
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High 8.1
Dell PowerScale OneFS, versions 8.2.x-9.2.x, contain broken or risky cryptographic algorithm. A remote unprivileged mal…
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High 7.5
Reversible One-Way Hash and Use of a Broken or Risky Cryptographic Algorithm in io.github.javaezlib.JavaEZ
JavaEZ is a library that adds new functions to make Java easier. A weakness in JavaEZ 1.6 allows force decryption of locked text by unauthorized actors. The issue is NOT critical for non-secure applications, however may be critical in a situation where the hi…
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High 7.4
Key confusion through non-blocklisted public key formats in PyJWT
PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT token can choose the used signing algorithm. The PyJWT library requires that the application chooses what algorith…
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Medium 5.4
Crypto script service uses hashing algorithm SHA1 with RSA for certificate signature in xwiki-platform
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. The XWiki Crypto API will generate X509 certificates signed by default using SHA1 with RSA, which is not considered safe anymore for use in certificate si…
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Medium 5.9
Incorrect MAC key used in the RC4-MD5 ciphersuite
The OpenSSL 3.0 implementation of the RC4-MD5 ciphersuite incorrectly uses the AAD data as the MAC key. This makes the MAC key trivially predictable. An attacker could exploit this issue by performing a man-in-the-middle attack to modify data being sent from …
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High 7.5
Dell PowerScale OneFS, version 9.3.0, contains a use of a broken or risky cryptographic algorithm. An unprivileged netw…
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High 8.2
Use of a Broken or Risky Cryptographic Algorithm in gnuboard/gnuboard5
Use of a Broken or Risky Cryptographic Algorithm in GitHub repository gnuboard/gnuboard5 prior to and including 5.5.5. A vulnerability in gnuboard v5.5.5 and below uses weak encryption algorithms leading to sensitive information exposure. This allows an attac…
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High 8.1
Dell PowerScale OneFS, versions 8.2.x-9.2.x, contain risky cryptographic algorithms. A remote unprivileged malicious at…
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High 7.5
Philips Vue PACS Use of a Broken or Risky Cryptographic Algorithm
The use of a broken or risky cryptographic algorithm in Philips Vue PACS versions 12.2.x.x and prior is an unnecessary risk that may result in the exposure of sensitive information.