Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
CVE-2017-9269
Summary
In libzypp before August 2018 GPG keys attached to YUM repositories were not correctly pinned, allowing malicious repository mirrors to silently downgrade to unsigned repositories with potential malicious content.
- HIGH
- NETWORK
- HIGH
- UNCHANGED
- NONE
- NONE
- HIGH
- LOW
CWE-757 - Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
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.
References
Advisory Timeline
- Published