CVE-2024-36121 – io.netty.incubator:netty-incubator-codec-ohttp

Package

Manager: maven
Name: io.netty.incubator:netty-incubator-codec-ohttp
Vulnerable Version: >=0.0.3.final <0.0.11.final

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00297 pctl0.52637

Details

BoringSSLAEADContext in Netty Repeats Nonces ### Summary BoringSSLAEADContext keeps track of how many OHTTP responses have been sent and uses this sequence number to calculate the appropriate nonce to use with the encryption algorithm. Unfortunately, two separate errors combine which would allow an attacker to cause the sequence number to overflow and thus the nonce to repeat. ### Details 1. There is no overflow detection or enforcement of the maximum sequence value. (This is a missed requirement from the draft Chunked Oblivious OHTTP RFC and so should be inherited from the HPKE RFC 9180, Section 5.2). 2. The sequence number (seq) is stored as 32-bit int which is relatively easy to overflow. https://github.com/netty/netty-incubator-codec-ohttp/blob/1ddadb6473cd3be5491d114431ed4c1a9f316001/codec-ohttp-hpke-classes-boringssl/src/main/java/io/netty/incubator/codec/hpke/boringssl/BoringSSLAEADContext.java#L112-L114 ### Impact If the BoringSSLAEADContext is used to encrypt more than 2^32 messages then the AES-GCM nonce will repeat. Repeating a nonce with AES-GCM results in both confidentiality and integrity compromise of data encrypted with the associated key.

Metadata

Created: 2024-06-05T16:53:49Z
Modified: 2024-06-05T16:53:49Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/06/GHSA-g762-h86w-8749/GHSA-g762-h86w-8749.json
CWE IDs: ["CWE-190", "CWE-200"]
Alternative ID: GHSA-g762-h86w-8749
Finding: F111
Auto approve: 1