Vulnerability · Published Apr 4, 2024 · Assigned by redhat
CVE-2024-3296Rust-openssl: timing based side-channel can lead to a bleichenbacher style attack
Medium 5.9
In plain English
A medium-severity security flaw in rust-openssl. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.4%top 64.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A timing-based side-channel flaw exists in the rust-openssl package, which could be sufficient to recover a plaintext across a network in a Bleichenbacher-style attack. To achieve successful decryption, an attacker would have to be able to send a large number of trial messages for decryption. The vulnerability affects the legacy PKCS#1v1.5 RSA encryption padding mode.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rust-openssl | no fix listed | CVE-2024-3296 |
| Debian:13 | rust-openssl | no fix listed | CVE-2024-3296 |
| Ubuntu:25.10 | rust-openssl | no fix listed | UBUNTU-CVE-2024-3296 |
| Ubuntu:26.04:LTS | rust-openssl | no fix listed | UBUNTU-CVE-2024-3296 |
| Ubuntu:26.10 | rust-openssl | no fix listed | UBUNTU-CVE-2024-3296 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| rust-openssl | 3.2.0 – before * | |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-208 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
References
- https://access.redhat.com/security/cve/CVE-2024-3296 vdb-entry, x_refsource_REDHAT
- RHBZ#2269723 issue-tracking, x_refsource_REDHAT