CVE-2023-50782
Publication date 5 February 2024
Last updated 24 July 2024
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| python-cryptography | 24.04 LTS noble |
Not affected
|
| 22.04 LTS jammy |
Fixed 3.4.8-1ubuntu2.2
|
|
| 20.04 LTS focal |
Fixed 2.8-3ubuntu0.3
|
|
| 18.04 LTS bionic |
Fixed 2.1.4-1ubuntu1.4+esm1
|
|
| 16.04 LTS xenial |
Fixed 1.2.3-1ubuntu0.3+esm1
|
|
| 14.04 LTS trusty | Ignored |
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litios
The issue is in OpenSSL, fixed in 3.2.0. Once OpenSSL fix is backported, a no-change rebuild of cryptography would be needed to fix the vulnerability.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-6673-1
- python-cryptography vulnerabilities
- 4 March 2024
- USN-6673-2
- python-cryptography vulnerability
- 14 March 2024