CVE-2020-25657 Information disclosure in m2crypto
Medium 5.9
Published
Updated
Check this codebase for CVE-2020-25657 and fix it if it is affected.
What it is: CVE-2020-25657 is a medium-severity vulnerability in Fedoraproject Fedora, published on 12 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-25657 in the wild and no public exploit code.
Affected product: Fedoraproject Fedora. No package-level version data is available, so check the vendor advisory linked from the reference page.
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-2020-25657/ (Markdown: https://insights.sbomify.com/CVE-2020-25657/index.md)
Attackers can exploit timing side-channels in RSA decryption to compromise confidentiality of encrypted data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-25657?
CVE-2020-25657 is a medium-severity vulnerability in Fedoraproject Fedora, published on 12 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in all released versions of m2crypto, where they are vulnerable to Bleichenbacher timing attacks in the RSA decryption API via the timed processing of valid PKCS#1 v1.5 Ciphertext. The highest threat from this vulnerability is to confidentiality.
Weakness: CWE-385
Which versions are affected by CVE-2020-25657?
It affects 4 products.
Linux distribution packages (40)
python-M2Crypto SUSE:Enterprise Storage 6 | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Enterprise Storage 7 | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP2-ESPOS | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 0.40.0-150400.3.9.1 |
python3-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 0.44.0-150400.13.1 |
python-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 0.40.0-150400.3.9.1 |
python3-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 0.44.0-150400.13.1 |
python3-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | All versions | 0.44.0-150400.13.1 |
python3-M2Crypto SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | All versions | 0.44.0-150400.13.1 |
python-M2Crypto SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Micro 5.1 | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Micro 5.2 | All versions | 0.35.2-150000.3.14.1 |
python3-M2Crypto SUSE:Linux Enterprise Micro 5.3 | All versions | 0.44.0-150400.13.1 |
python3-M2Crypto SUSE:Linux Enterprise Micro 5.4 | All versions | 0.44.0-150400.13.1 |
python3-M2Crypto SUSE:Linux Enterprise Micro 5.5 | All versions | 0.44.0-150400.13.1 |
python-M2Crypto SUSE:Linux Enterprise Module for Basesystem 15 SP3 | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 0.38.0-150400.3.3.1 |
python-M2Crypto SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 0.38.0-150400.3.6.1 |
python3-M2Crypto SUSE:Linux Enterprise Module for Basesystem 15 SP6 | All versions | 0.44.0-150600.19.3.1 |
python-M2Crypto SUSE:Linux Enterprise Module for Public Cloud 12 | All versions | 0.29.0-23.8.1 |
python-M2Crypto SUSE:Linux Enterprise Module for Public Cloud 15 | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Module for Python 2 15 SP3 | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Module for Python 3 15 SP5 | All versions | 0.40.0-150400.3.9.1 |
python-M2Crypto SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 0.29.0-23.8.1 |
python-M2Crypto SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 0.29.0-23.8.1 |
python-M2Crypto SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 0.29.0-23.8.1 |
python-M2Crypto SUSE:Linux Enterprise Server 12 SP5 | All versions | 0.29.0-23.8.1 |
python-M2Crypto SUSE:Linux Enterprise Server 15 SP1-BCL | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Server 15 SP2-BCL | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Server 15 SP2-LTSS | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 0.40.0-150400.3.9.1 |
python3-M2Crypto SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 0.44.0-150400.13.1 |
python3-M2Crypto SUSE:Linux Enterprise Server 15 SP5-LTSS | All versions | 0.44.0-150400.13.1 |
python-M2Crypto SUSE:Linux Enterprise Server 15-LTSS | All versions | 0.35.2-150000.3.14.1 |
python-M2Crypto SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 0.29.0-23.8.1 |
Products include Fedoraproject Fedora, M2crypto Project M2crypto, Redhat Enterprise Linux, Redhat Virtualization.
How do I fix CVE-2020-25657?
Apply the vendor's patch.
Is CVE-2020-25657 being exploited?
There is no known exploitation of CVE-2020-25657 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as AZL-10076, AZL-34969, DEBIAN-CVE-2020-25657, GHSA-2j9v-8g47-mxh2, MGASA-2022-0274, OESA-2022-1852 and 10 more.