SUSE update for python-rsa

1) Use of a broken or risky cryptographic algorithm

EUVDB-ID: #VU28793

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-2020-13757

CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information on the target system.

The vulnerability exists due to the affected software does not detect ciphertext modification during decryption (prepended "0" bytes) in PKCS1_v1_5. A remote attacker gain access to sensitive information on the system.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Public Cloud: 12

SUSE OpenStack Cloud: 7

python-rsa: before 3.1.4-12.16.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20212237-1/

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.