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Common Weakness Enumeration

CWE-347

Allowed

Improper Verification of Cryptographic Signature

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

1272 vulnerabilities reference this CWE, most recent first.

CVE-2021-22708 (GCVE-0-2021-22708)

Vulnerability from cvelistv5 – Published: 2021-07-21 10:41 – Updated: 2024-08-03 18:51
VLAI
Summary
A CWE-347: Improper Verification of Cryptographic Signature vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) that could allow an attacker to craft a malicious firmware package and bypass the signature verification mechanism.
Severity
No CVSS data available.
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
n/a EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) Affected: EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 )
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CVE-2021-22573 (GCVE-0-2021-22573)

Vulnerability from cvelistv5 – Published: 2022-05-03 15:45 – Updated: 2025-04-21 13:54
VLAI
Title
Incorrect signature verification on Google-oauth-java-client
Summary
The vulnerability is that IDToken verifier does not verify if token is properly signed. Signature verification makes sure that the token's payload comes from valid provider, not from someone else. An attacker can provide a compromised token with custom payload. The token will pass the validation on the client side. We recommend upgrading to version 1.33.3 or above
Severity
8.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-21 13:36 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
Google LLC Google-oauth-java-client Affected: unspecified , < 1.33.2 (custom)
Create a notification for this product.
Show details on NVD website
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CVE-2021-21405 (GCVE-0-2021-21405)

Vulnerability from cvelistv5 – Published: 2021-04-15 21:35 – Updated: 2024-08-03 18:09
VLAI
Title
BLS Signature "Malleability"
Summary
Lotus is an Implementation of the Filecoin protocol written in Go. BLS signature validation in lotus uses blst library method VerifyCompressed. This method accepts signatures in 2 forms: "serialized", and "compressed", meaning that BLS signatures can be provided as either of 2 unique byte arrays. Lotus block validation functions perform a uniqueness check on provided blocks. Two blocks are considered distinct if the CIDs of their blockheader do not match. The CID method for blockheader includes the BlockSig of the block. The result of these issues is that it would be possible to punish miners for valid blocks, as there are two different valid block CIDs available for each block, even though this must be unique. By switching from the go based `blst` bindings over to the bindings in `filecoin-ffi`, the code paths now ensure that all signatures are compressed by size and the way they are deserialized. This happened in https://github.com/filecoin-project/lotus/pull/5393.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
filecoin-project lotus Affected: < 1.5.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-21239 (GCVE-0-2021-21239)

Vulnerability from cvelistv5 – Published: 2021-01-21 14:15 – Updated: 2024-08-03 18:09
VLAI
Title
Open default xmlsec1 key-type preference
Summary
PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2 6.5.0.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
IdentityPython pysaml2 Affected: < 6.5.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-21238 (GCVE-0-2021-21238)

Vulnerability from cvelistv5 – Published: 2021-01-21 14:15 – Updated: 2024-08-03 18:09
VLAI
Title
SAML XML Signature wrapping
Summary
PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
IdentityPython pysaml2 Affected: < 6.5.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-20319 (GCVE-0-2021-20319)

Vulnerability from cvelistv5 – Published: 2022-03-04 17:05 – Updated: 2024-08-03 17:37
VLAI
Summary
An improper signature verification vulnerability was found in coreos-installer. A specially crafted gzip installation image can bypass the image signature verification and as a consequence can lead to the installation of unsigned content. An attacker able to modify the original installation image can write arbitrary data, and achieve full access to the node being installed.
Severity
No CVSS data available.
CWE
  • CWE-347 - - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
n/a coreos-installer Affected: Affects coreos-installer before v0.10.1, Fixed in v0.10.1.
Show details on NVD website
To clipboard 

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CVE-2021-3633 (GCVE-0-2021-3633)

Vulnerability from cvelistv5 – Published: 2021-08-17 16:25 – Updated: 2024-08-03 17:01
VLAI
Summary
A DLL preloading vulnerability was reported in Lenovo Driver Management prior to version 2.9.0719.1104 that could allow privilege escalation.
Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
Lenovo Driver Management Affected: unspecified , < 2.9.0719.1104 (custom)
Create a notification for this product.
Credits
Lenovo thanks Guangdong Network Security Emergency Response Center and Sangfor QianLiMu Security Lab – Terminal Security Team for identifying this issue.
Show details on NVD website
To clipboard 

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CVE-2021-3521 (GCVE-0-2021-3521)

Vulnerability from cvelistv5 – Published: 2022-08-22 00:00 – Updated: 2024-08-03 17:01
VLAI
Summary
There is a flaw in RPM's signature functionality. OpenPGP subkeys are associated with a primary key via a "binding signature." RPM does not check the binding signature of subkeys prior to importing them. If an attacker is able to add or socially engineer another party to add a malicious subkey to a legitimate public key, RPM could wrongly trust a malicious signature. The greatest impact of this flaw is to data integrity. To exploit this flaw, an attacker must either compromise an RPM repository or convince an administrator to install an untrusted RPM or public key. It is strongly recommended to only use RPMs and public keys from trusted sources.
Severity
No CVSS data available.
CWE
  • CWE-347 - - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
n/a RPM Affected: Fixed in rpm-4.18.0-beta1, rpm-4.18.0-alpha2, rpm-4.18.0-alpha1 .
Show details on NVD website
To clipboard 

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CVE-2021-3445 (GCVE-0-2021-3445)

Vulnerability from cvelistv5 – Published: 2021-05-19 13:44 – Updated: 2024-08-03 16:53
VLAI
Summary
A flaw was found in libdnf's signature verification functionality in versions before 0.60.1. This flaw allows an attacker to achieve code execution if they can alter the header information of an RPM package and then trick a user or system into installing it. The highest risk of this vulnerability is to confidentiality, integrity, as well as system availability.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a libdnf Affected: libdnf 0.60.1
Show details on NVD website
To clipboard 

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CVE-2021-3421 (GCVE-0-2021-3421)

Vulnerability from cvelistv5 – Published: 2021-05-19 13:40 – Updated: 2024-08-03 16:53
VLAI
Summary
A flaw was found in the RPM package in the read functionality. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package or compromise an RPM repository, to cause RPM database corruption. The highest threat from this vulnerability is to data integrity. This flaw affects RPM versions before 4.17.0-alpha.
Severity
No CVSS data available.
CWE
Assigner
References
URL Tags
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://bugzilla.redhat.com/show_bug.cgi?id=1927747 x_refsource_MISC
https://security.gentoo.org/glsa/202107-43 vendor-advisoryx_refsource_GENTOO
Impacted products
Vendor Product Version
n/a rpm Affected: rpm 4.17.0-alpha
Show details on NVD website
To clipboard 

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No mitigation information available for this CWE.

CAPEC-463: Padding Oracle Crypto Attack

An adversary is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an adversary is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an adversary is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key.

CAPEC-475: Signature Spoofing by Improper Validation

An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.

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