Vulnerability identifier: #VU72036
Vulnerability risk: Low
CVSSv3.1: 2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-388
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
python-cryptography
Universal components / Libraries /
Programming Languages & Components
Vendor: Python Cryptographic Authority
Description
The vulnerability allows an attacker to misuse Python API.
The vulnerability exists due to a soundness bug within the Cipher.update_into function, which can allow immutable objects (such as bytes
) to be mutated. A malicious programmer can misuse Python API to introduce unexpected behavior into the application.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
python-cryptography: 0.8 - 39.0.0
External links
http://github.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6r
http://github.com/pyca/cryptography/pull/8230/commits/94a50a9731f35405f0357fa5f3b177d46a726ab3
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.