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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | rust-openssl | 3.2.0 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rust-openssl | No fix yet | — |
| Ubuntu 26.04 LTS | rust-openssl | No fix yet | — |
| Ubuntu 25.10 | rust-openssl | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | rust-openssl | No fix yet | — |
| Ubuntu Pro 22.04 LTS | rust-openssl | No fix yet | — |
| Ubuntu Pro 20.04 LTS | rust-openssl | No fix yet | — |
References
- https://access.redhat.com/security/cve/CVE-2024-3296 vdb-entry
- RHBZ#2269723 issue-tracking