CVE-2020-12457
Fixed in a distro release EPSS 2%
An issue was discovered in wolfSSL before 4.5.0. It mishandles the change_cipher_spec (CCS) message processing logic for TLS 1.3. If an attacker sends ChangeCipherSpec messages in a crafted way involving more than one in a row, the server becomes stuck in the ProcessReply() loop, i.e., a denial of service.
Products: wolfssl
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | wolfssl | 4.5.0+dfsg-1 |
| Debian 13 | wolfssl | 4.5.0+dfsg-1 |
| Ubuntu 16.04 LTS | wolfssl | no fix |
| Ubuntu 18.04 LTS | wolfssl | no fix |
| Ubuntu 20.04 LTS | wolfssl | no fix |