CVE-2023-50781: M2crypto: bleichenbacher timing attacks in the rsa decryption api - incomplete fix for cve-2020-25657
First published: Wed Dec 13 2023(Updated: )
A flaw was found in m2crypto. 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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/m2crypto | <=0.40.1 | |
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux | =9.0 | |
| Red Hat Update Infrastructure | =4 | |
| M2Crypto |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://access.redhat.com/security/cve/CVE-2023-50781
- https://bugzilla.redhat.com/show_bug.cgi?id=2254426
- https://access.redhat.com/security/cve/CVE-2020-25657
- https://gitlab.com/m2crypto/m2crypto/-/issues/342
- https://people.redhat.com/~hkario/marvin/
- https://github.com/openssl/openssl/pull/13817
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2254436
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2254734
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2254735
- https://nvd.nist.gov/vuln/detail/CVE-2023-50781
- https://github.com/advisories/GHSA-944j-8ch6-rf6x (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-50781?
CVE-2023-50781 is classified as a critical vulnerability due to its potential to allow remote attackers to decrypt sensitive data.
How do I fix CVE-2023-50781?
To mitigate CVE-2023-50781, update m2crypto to a version higher than 0.40.1 immediately.
Which systems are affected by CVE-2023-50781?
CVE-2023-50781 affects m2crypto versions up to and including 0.40.1 on Red Hat Enterprise Linux 8.0, 9.0, and Red Hat Update Infrastructure 4.
Can CVE-2023-50781 lead to data breaches?
Yes, CVE-2023-50781 could potentially lead to data breaches by allowing attackers to decrypt messages in TLS servers using RSA key exchanges.
What should I do if I cannot update due to compatibility issues related to CVE-2023-50781?
If unable to update due to compatibility issues, evaluate potential workarounds such as using alternative cryptographic libraries while seeking a permanent fix.
- agent/title
- agent/type
- agent/description
- agent/first-publish-date
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-944j-8ch6-rf6x
- alias/CVE-2023-50781
- agent/software-canonical-lookup
- agent/references
- agent/event
- agent/author
- collector/nvd-cve
- source/NVD
- collector/github-advisory
- agent/weakness
- agent/severity
- collector/redhat-bugzilla
- source/Red Hat
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/trending
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-api
- agent/software-canonical-lookup-request
- package-manager/pip
- vendor/redhat
- canonical/red hat enterprise linux
- version/red hat enterprise linux/8.0
- version/red hat enterprise linux/9.0
- canonical/red hat update infrastructure
- version/red hat update infrastructure/4
- vendor/m2crypto project
- canonical/m2crypto