CVE-2026-123613
Public on 2026-11-08
Modified on 2026-11-12
Description
Rustls from 0.23.13 before 0.23.45 accepts TLS 1.3 handshake messages at the wrong encryption level when they follow a key-changing message in the same record, because Deframer::aligned does not enforce RFC 8446 record-boundary alignment. A peer or on-path attacker can pack a plaintext EncryptedExtensions with the ServerHello, which rustls accepts unencrypted.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | amazon-efs-utils | Pending Fix | ||
| Amazon Linux 2023 | amazon-efs-utils | Pending Fix | ||
| Amazon Linux 2027 Preview | amazon-efs-utils | Pending Fix | ||
| Amazon Linux 2 - Aws-nitro-enclaves-cli Extra | aws-nitro-enclaves-cli | Pending Fix | ||
| Amazon Linux 2023 | aws-nitro-enclaves-cli | Pending Fix | ||
| Amazon Linux 2027 Preview | aws-nitro-enclaves-cli | Pending Fix | ||
| Amazon Linux 2023 | aws-workload-credentials-provider | Pending Fix | ||
| Amazon Linux 2023 | network-flow-monitor-agent | Pending Fix | ||
| Amazon Linux 2027 Preview | network-flow-monitor-agent | Pending Fix | ||
| Amazon Linux 2027 Preview | python-bcrypt | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |