CVE-2023-50782
Published: 5 February 2024
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | as of 2024-02-19, there doesn't appear to be an upstream fix for this issue |
| 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. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
python-cryptography Launchpad, Ubuntu, Debian |
bionic |
Released
(2.1.4-1ubuntu1.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(2.8-3ubuntu0.3)
|
|
| jammy |
Released
(3.4.8-1ubuntu2.2)
|
|
| lunar |
Ignored
(end of life, was deferred [2024-02-19])
|
|
| mantic |
Released
(38.0.4-4ubuntu0.23.10.2)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Released
(42.0.0)
|
|
| xenial |
Released
(1.2.3-1ubuntu0.3+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| 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
- https://github.com/pyca/cryptography/issues/9785
- https://people.redhat.com/~hkario/marvin/
- https://github.com/openssl/openssl/pull/13817
- https://ubuntu.com/security/notices/USN-6663-1
- https://ubuntu.com/security/notices/USN-6673-1
- https://ubuntu.com/security/notices/USN-6673-2
- https://www.cve.org/CVERecord?id=CVE-2023-50782
- NVD
- Launchpad
- Debian