CVE-2023-50782 Python-cryptography: bleichenbacher timing oracle attack against rsa decryption - incomplete fix for cve-2020-25659
High 7.5
Published
Updated
Check this codebase for CVE-2023-50782 and fix it if it is affected.
What it is: CVE-2023-50782 is a high-severity vulnerability in Couchbase Couchbase Server, published on 5 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-50782 exists.
Affected packages and fixed versions:
- cryptography (PyPI): affected all versions; fixed in 42.0.0
- cryptography (PyPI): affected all versions; fixed in 42.0.0
- cryptography (PyPI): affected all versions; fixed in 42.0.0
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2023-50782/ (Markdown: https://insights.sbomify.com/CVE-2023-50782/index.md)
A timing oracle in RSA decryption allows remote attackers to decrypt TLS messages, exposing sensitive data in applications using the library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-50782?
CVE-2023-50782 is a high-severity vulnerability in Couchbase Couchbase Server, published on 5 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.
Weakness: CWE-203
Which versions are affected by CVE-2023-50782?
3 open source packages ship an affected version, including cryptography. It affects 5 products.
| Package | Affected | Fixed in |
|---|---|---|
cryptography PyPI | All versions | 42.0.0 |
cryptography PyPI | All versions | 42.0.0 |
cryptography PyPI | All versions | 42.0.0 |
Linux distribution packages (29)
openssl-1_1 SUSE:Enterprise Storage 7.1 | All versions | 1.1.1d-150200.11.97.1 |
openssl-1_1 SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 1.1.1d-150200.11.97.1 |
openssl-1_1 SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 1.1.1d-150200.11.97.1 |
openssl-1_1 SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 1.1.1l-150400.7.75.1 |
openssl-1_1 SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 1.1.1l-150400.7.75.1 |
openssl-1_1 SUSE:Linux Enterprise Micro 5.1 | All versions | 1.1.1d-150200.11.97.1 |
openssl-1_1 SUSE:Linux Enterprise Micro 5.2 | All versions | 1.1.1d-150200.11.97.1 |
openssl-1_1 SUSE:Linux Enterprise Micro 5.3 | All versions | 1.1.1l-150400.7.75.1 |
openssl-1_1 SUSE:Linux Enterprise Micro 5.4 | All versions | 1.1.1l-150400.7.75.1 |
openssl-1_1 SUSE:Linux Enterprise Micro 5.5 | All versions | 1.1.1l-150500.17.37.1 |
openssl-1_1 SUSE:Linux Enterprise Module for Basesystem 15 SP5 | All versions | 1.1.1l-150500.17.37.1 |
openssl-1_1 SUSE:Linux Enterprise Module for Basesystem 15 SP6 | All versions | 1.1.1w-150600.5.9.1 |
openssl-3 SUSE:Linux Enterprise Module for Basesystem 15 SP6 | All versions | 3.1.4-150600.5.21.1 |
openssl-1_1 SUSE:Linux Enterprise Module for Development Tools 15 SP6 | All versions | 1.1.1w-150600.5.9.1 |
openssl-1_1 SUSE:Linux Enterprise Module for Legacy 15 SP6 | All versions | 1.1.1w-150600.5.9.1 |
openssl-1_1 SUSE:Linux Enterprise Server 12 SP5-LTSS | All versions | 1.1.1d-2.113.1 |
openssl-1_1 SUSE:Linux Enterprise Server 15 SP2-LTSS | All versions | 1.1.1d-150200.11.97.1 |
openssl-1_1 SUSE:Linux Enterprise Server 15 SP3-LTSS | All versions | 1.1.1d-150200.11.97.1 |
openssl-1_1 SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 1.1.1l-150400.7.75.1 |
openssl-1_1 SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 1.1.1d-2.113.1 |
openssl-1_1 SUSE:Linux Enterprise Server for SAP Applications 15 SP2 | All versions | 1.1.1d-150200.11.97.1 |
openssl-1_1 SUSE:Linux Enterprise Server for SAP Applications 15 SP3 | All versions | 1.1.1d-150200.11.97.1 |
openssl-1_1 SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | All versions | 1.1.1l-150400.7.75.1 |
openssl-3 SUSE:Linux Micro 6.1 | All versions | 3.1.4-slfo.1.1_6.1 |
openssl-1_1 SUSE:Manager Server 4.3 | All versions | 1.1.1l-150400.7.75.1 |
openssl-1_1 openSUSE:Leap 15.5 | All versions | 1.1.1l-150500.17.37.1 |
openssl-1_1 openSUSE:Leap 15.6 | All versions | 1.1.1w-150600.5.9.1 |
openssl-3 openSUSE:Leap 15.6 | All versions | 3.1.4-150600.5.21.1 |
openssl-1_1 openSUSE:Leap Micro 5.5 | All versions | 1.1.1l-150500.17.37.1 |
Products include Couchbase Couchbase Server, Cryptography.io Cryptography, Redhat Ansible Automation Platform, Redhat Enterprise Linux, Redhat Update Infrastructure.
How do I fix CVE-2023-50782?
Upgrade cryptography to 42.0.0 or later.
Is CVE-2023-50782 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-50782 exists.
Other vulnerabilities in Couchbase Couchbase Server
Sources
Also known as AZL-34309, AZL-35129, BELL-CVE-2023-50782, DEBIAN-CVE-2023-50782, ECHO-96e2-b383-d2c5, GHSA-3ww4-gg4f-jr7f and 19 more.