VDB
CVE-2020-12457
CVE-2020-12457
PUBLISHED
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.
EPSS 0.47% · 64.9th percentile
Risk Scores
EPSS Score
0.47%
64.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | wolfssl | 4.3.0+dfsg-2, 0, 4.1.0+dfsg-2 |
| Ubuntu:18.04:LTS | wolfssl | *, 3.13.0+dfsg-1, 0 |
| Ubuntu:16.04:LTS | wolfssl | 3.4.8+dfsg-1, 0 |
Exploit Intelligence
Timeline
- Aug 21, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Jul 21, 2021 CVE Updated
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-12457 third-party-advisory
- https://github.com/wolfSSL/wolfssl/pull/2927 third-party-advisory
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.5.0-stable third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-12457 third-party-advisory