Improper Input Validation Affecting wolfssl package, versions <4.5.0+dfsg-1
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-WOLFSSL-608250
- published 22 Aug 2020
- disclosed 21 Aug 2020
Introduced: 21 Aug 2020
CVE-2020-12457 Open this link in a new tabHow to fix?
Upgrade Debian:unstable wolfssl to version 4.5.0+dfsg-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream wolfssl package and not the wolfssl package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.