Ubuntu update for python-cryptography

Published: 2024-04-08

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-50782 CVE-2024-26130
CWE-ID	CWE-203 CWE-476
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system python-cryptography (Ubuntu package) Operating systems & Components / Operating system package or component python3-cryptography (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Observable discrepancy

EUVDB-ID: #VU88199

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-50782

CWE-ID: CWE-203 - Observable discrepancy

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker can decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.

Mitigation

Update the affected package python-cryptography to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 23.10

python-cryptography (Ubuntu package): before Ubuntu Pro

python3-cryptography (Ubuntu package): before Ubuntu Pro

External links

http://ubuntu.com/security/notices/USN-6673-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) NULL pointer dereference

EUVDB-ID: #VU87129