Vulnerability · Published Feb 5, 2024 · Assigned by redhat
CVE-2023-50782Python-cryptography: bleichenbacher timing oracle attack against rsa decryption - incomplete fix for cve-2020-25659
High 7.5
In plain English
A high-severity security flaw in python-cryptography. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.1%top 33.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | python-cryptography | no fix listed | DEBIAN-CVE-2023-50782 |
| Debian:13 | python-cryptography | 42.0.5-1 | DEBIAN-CVE-2023-50782 |
| Debian:14 | python-cryptography | 42.0.5-1 | DEBIAN-CVE-2023-50782 |
| PyPI | cryptography | 42.0.0 | GHSA-3ww4-gg4f-jr7f |
| PyPI | cryptography | 42.0.0 | PYSEC-2026-1283 |
| Ubuntu:22.04:LTS | python-cryptography | 3.4.8-1ubuntu2.2 | USN-6673-1 |
| Ubuntu:22.04:LTS | python-cryptography | 3.4.8-1ubuntu2.2 | UBUNTU-CVE-2023-50782 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| python-cryptography | 3.2 – before 42.0.0 | |
| Red Hat | Red Hat Ansible Automation Platform 2 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| 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 Satellite 6 | see references |
| Red Hat | Red Hat Update Infrastructure 4 for Cloud Providers | see references |
Weakness: CWE-203 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
- https://access.redhat.com/security/cve/CVE-2023-50782 vdb-entry, x_refsource_REDHAT
- RHBZ#2254432 issue-tracking, x_refsource_REDHAT
- https://www.couchbase.com/alerts/ x_transferred