CWE-757: Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

ID CWE-757
Abstraction Base
Structure Simple
Status Incomplete
Number of CVEs 14
A protocol or its implementation supports interaction between multiple actors and allows those actors to negotiate which algorithm should be used as a protection mechanism such as encryption or authentication, but it does not select the strongest algorithm that is available to both parties.

When a security mechanism can be forced to downgrade to use a less secure algorithm, this can make it easier for attackers to compromise the product by exploiting weaker algorithm. The victim might not be aware that the less secure algorithm is being used. For example, if an attacker can force a communications channel to use cleartext instead of strongly-encrypted data, then the attacker could read the channel by sniffing, instead of going through extra effort of trying to decrypt the data using brute force techniques.

Modes of Introduction

Phase Note
Architecture and Design COMMISSION: This weakness refers to an incorrect design related to an architectural security tactic.

Relationships

View Weakness
# ID View Status # ID Name Abstraction Structure Status
CWE-1000 Research Concepts Draft CWE-693 Protection Mechanism Failure Pillar Simple Draft

Common Attack Pattern Enumeration and Classification (CAPEC)

The Common Attack Pattern Enumeration and Classification (CAPECâ„¢) effort provides a publicly available catalog of common attack patterns that helps users understand how adversaries exploit weaknesses in applications and other cyber-enabled capabilities.

CAPEC at Mitre.org
# ID Name Weaknesses
CAPEC-220 Client-Server Protocol Manipulation CWE-757
CAPEC-606 Weakening of Cellular Encryption CWE-757
CAPEC-620 Drop Encryption Level CWE-757

CVEs Published

CVSS Severity

CVSS Severity - By Year

CVSS Base Score

# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories Exploits PoC Pubblication Date Modification Date
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories PoC Pubblication Date Modification Date
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